任何国家机关都必须在法律授权范围内行使权力。Rènhé guójiā jīguān dōu bìxū zài fǎlǜ shòuquán fànwéi nèi xíngshǐ quánlì.Every state organ must exercise power within the scope authorised by law.
他在政府机关工作了三十年,今年退休。Tā zài zhèngfǔ jīguān gōngzuò le sānshí nián, jīnnián tuìxiū.He worked in a government office for thirty years and retires this year.
这个玩具盒里藏着巧妙的机关,一按就会弹开。Zhège wánjù hé lǐ cáng zhe qiǎomiào de jīguān, yí àn jiù huì tán kāi.This toy box hides a clever mechanism and pops open at a press.