常見(jiàn)例句雙語(yǔ)例句Make sure check the bolt and nut before testing run. and if they become less crowded, fastening again.試車前務(wù)必檢查所有螺栓、螺母是否有松動(dòng)，若有松動(dòng)的螺栓、螺母必須重新緊固。Such pandemics will become more frequent as ecosystems become more crowded , less varied and more fragile.隨著生態(tài)系統(tǒng)更爲(wèi)擁擠，物種減少竝變得更脆弱，大流行病會(huì)瘉加平凡，隨時(shí)爆發(fā)。 返回 become less crowded