principle ⇒ 我们原则上同意你的观点。 Wǒmen yuánzé shang tóngyì nǐ de guāndiǎn. → We agree with you in principle.
否则
otherwise ⇒ 好好温习功课,否则考试通不过。 Hǎohǎo wēnxí gōngkè, fǒuzé kǎoshì tōng bù guò. → Revise properly, otherwise you won't pass your exams.
守则
regulation
法则
law
细则
detailed rules pl
规则
regulation
以身作则
set an example
欲速则不达
try to run before one can walk ⇒ 学习外语是一个循序渐进的过程，欲速则不达。 Xuéxí wàiyǔ shì yī gè xún xù jiàn jìn de guòchéng, yù sù zé bù dá. → Studying foreign languages is a progressive, gradual process – you can't run before you can walk.
English translation of '则'
则 (則)
(zé)
名
(= 榜样) standard
⇒ 准则 (zhǔnzé) standard
(= 规章) rule
⇒ 总则 (zǒngzé) general principle
量
piece
⇒ 新闻三则 (xīnwén sān zé) three items of news
连
(= 就) then
⇒ 不战则已,战则必胜。 (Bù zhàn zé yǐ, zhàn zé bì shèng.) If you don't fight, then fine. If you do fight, fight to win.
(= 却) but
⇒ 他很虚荣,她则不然。 (Tā hěn xūróng, tā zé bùrán.) He's very vain, but she's not.
⇒ 南方湿润,北方则干燥。 (Nánfāng shīrùn, běifāng zé gānzào.) The south is humid, but the north is dry.
助
⇒ 不能让老人们干这种活儿,一则他们年纪大,二则身体差。 (Bùnéng ràng lǎorénmen gàn zhè zhǒng huór, yī zé tāmen niánjì dà, èr zé shēntǐ chà.) You can't let elderly people do this kind of work. For one thing, they're too old,and for another, they're not up to it health-wise.