| 必不可少组成 | [ bì bù kě shaǒ zǔ chéng ] absolute necessity, sine qua non |
| 必修课 | [ bì xiū kè ] required course, compulsory course |
| 必备 | [ bì beì ] essential |
| 必胜 | [ bì shèng ] to be certain of victory, to be bound to prevail |
| 必胜客 | [ bì shèng kè ] Pizza Hut |
| 必将 | [ bì jiāng ] inevitably |
| 必应 | [ bì yìng ] Bing (search engine) |
| 必有重谢 | [ bì yoǔ zhòng xiè ] (we) will be very grateful (if ...) |
| 必然王国 | [ bì rán wáng guó ] realm of necessity (philosophy) |
| 必然结果 | [ bì rán jié guǒ ] inevitable outcome, inescapable consequence |
| 必经 | [ bì jīng ] unavoidable, the only (road, entrance etc) |
| 必经之路 | [ bì jīng zhī lù ] the road one must follow or take, the only way, same as 必由之路[bi4 you2 zhi1 lu4] |
| 必要条件 | [ bì yaò jiàn ] requirement, necessary condition (math) |
| 必须 | [ bì xū ] to have to, must, compulsory, necessarily |
| ⇒ 三人行，则必有我师 | [ sān rén xíng zé bì yoǔ wǒ shī ] If three walk together, one of them can teach me sth (Confucius) |
| ⇒ 三人行，必有我师 | [ sān rén xíng bì yoǔ wǒ shī ] lit. if three walk together, one can be my teacher (idiom, from the Analects of Confucius), you have sth to learn from everyone |
| ⇒ 事必躬亲 | [ shì bì gōng qīn ] to attend to everything personally |
| ⇒ 二虎相斗，必有一伤 | [ èr hǔ xiāng doù bì yoǔ yī shāng ] lit. when two tigers fight, one is sure to be wounded (idiom), fig. if it comes to a fight, someone will get hurt |
| ⇒ 人无远虑，必有近忧 | [ rén wú yuǎn lǜ bì yoǔ jìn yoū ] He who gives no thought to far-flung problems soon finds suffering nearby (idiom, from Analects)., Smug concentration on the here and now will lead to future sorrow. |
| ⇒ 两虎相争，必有一伤 | [ liǎng hǔ xiāng zhēng bì yoǔ yī shāng ] if two tigers fight, one will get injured (idiom), if you start a war, someone is bound to get hurt |
| ⇒ 两虎相斗，必有一伤 | [ liǎng hǔ xiāng doù bì yoǔ yī shāng ] when two tigers fight, one will get injured (idiom), if it comes to a fight, someone will get hurt. |
| ⇒ 分秒必争 | [ fēn bì zhēng ] seize every minute and second (idiom); not a minute to lose, every moment counts |
| ⇒ 务必 | [ wù bì ] must, to need to, to be sure to |
| ⇒ 势在必得 | [ shì zaì bì dé ] to be determined to win (idiom) |
| ⇒ 势在必行 | [ shì zaì bì xíng ] circumstances require action (idiom); absolutely necessary, imperative |
| ⇒ 势必 | [ shì bì ] to be bound to, undoubtedly will |
| ⇒ 哀兵必胜 | [ aī bīng bì shèng ] an army burning with righteous indignation is bound to win (idiom) |
| ⇒ 多行不义必自毙 | [ duō xíng bù yì bì zì bì ] persisting in evil brings about self-destruction (idiom) |
| ⇒ 大难不死，必有后福 | [ dà nàn bù sǐ bì yoǔ hoù fú ] one is bound for good fortune after surviving a great disaster (proverb) |
| ⇒ 小时了了，大未必佳 | [ shí dà weì bì jiā ] being bright at an early age does not necessarily bring success upon growing up (proverb) |
| ⇒ 德不配位，必有灾殃 | [ dé bù peì weì bì yoǔ zaī yāng ] calamity will befall those whose moral standards are not in keeping with their social status |
| ⇒ 既有今日何必当初 | [ jì yoǔ jīn rì hé bì dāng chū ] see 早知今日何必當初|早知今日何必当初[zao3 zhi1 jin1 ri4 he2 bi4 dang1 chu1] |
| ⇒ 早知今日何必当初 | [ zaǒ zhī jīn rì hé bì dāng chū ] if I (you, she, he...) had known it would come to this, I (you, she, he...) would not have acted thus (idiom), to regret vainly one's past behavior |
| ⇒ 智者千虑，必有一失 | [ zhì zhě qiān lǜ bì yoǔ yī shī ] lit. a wise person reflecting a thousand times can still make a mistake (idiom); fig. nobody is infallible |
| ⇒ 有其师，必有其徒 | [ yoǔ qí shī bì yoǔ qí tú ] As the teacher, so the pupil. (idiom) |
| ⇒ 有宝何必人前夸 | [ yoǔ baǒ hé bì rén qián kuā ] There is no need to boast about one's treasures. (idiom) |
| ⇒ 有求必应 | [ yoǔ qiú bì yìng ] to grant whatever is asked for, to accede to every plea |
| ⇒ 未必见得 | [ weì bì jiàn dé ] not necessarily, that's not sure |
| ⇒ 洛必达法则 | [ luò bì dá fǎ zé ] L'Hôpital's rule (math.) |
| ⇒ 物极必反 | [ wù jí bì fǎn ] when things reach an extreme, they can only move in the opposite direction (idiom) |
| ⇒ 睚眦必报 | [ yá zì bì baò ] lit. to seek revenge over a dirty look (idiom), fig. small-minded, vindictive |
| ⇒ 空穴来风未必无因 | [ kòng xué laí fēng weì bì wú yīn ] wind does not come from an empty cave without reason, there's no smoke without fire (idiom) |
| ⇒ 罗必达法则 | [ luó bì dá fǎ zé ] L'Hôpital's rule (math.) (Tw) |
| ⇒ 自不必说 | [ zì bù bì shuō ] (idiom) needless to say, it goes without saying |
| ⇒ 苏必利尔湖 | [ sū bì lì ěr hú ] Lake Superior, one of the Great Lakes 五大湖[Wu3 da4 hu2] |
| ⇒ 车到山前必有路 | [ chē daò shān qián bì yoǔ lù ] lit. when we get to the mountain, there'll be a way through (idiom), fig. everything will turn out for the best, let's worry about it when it happens, it will be all right on the night |
| ⇒ 车到山前必有路，船到桥头自然直 | [ chē daò shān qián bì yoǔ lù chuán daò toú zì rán zhí ] everything will turn out all right (idiom), let's worry about it when it happens, it will be all right on the night |
| ⇒ 锱铢必较 | [ zī zhū bì ] to haggle over every cent (idiom) |
| ⇒ 阴德必有阳报 | [ yīn dé bì yoǔ yáng baò ] hidden merits will have visible rewards (idiom) |
| ⇒ 骄兵必败 | [ bīng bì baì ] lit. an arrogant army is bound to lose (idiom), fig. pride goes before a fall |
| ⇒ 骄者必败 | [ zhě bì baì ] pride goes before a fall (idiom) |
