v.使 ... 弱，削弱； 變?nèi)酰?弄淡

Hansen says if the Gulf stream were to weaken it could affect marine life. 韓森說，如果灣流太弱，會影響海洋生命。

Because transplants weaken the immune system, they cannot be performed on sick patients. 由于移植會使免疫系統(tǒng)變?nèi)酰∪嗽诖饲闆r下不能施行手術(shù)。

Because transplants weaken the immune system, they cannot be performed on sick patients. 由于移植會使免疫系統(tǒng)變?nèi)酰∪嗽诖饲闆r下不能施行手術(shù)。

weaken可指生物體表明健康狀況的官能效果喪失、體力衰弱,也可指物質(zhì)或非物質(zhì)的完整性、穩(wěn)定性、強(qiáng)度、數(shù)量等方面減弱或喪失。引申可指“(使)猶豫”。

weaken既可用作不及物動詞,也可用作及物動詞。用作及物動詞時,接名詞或代詞作賓語。