v.加強；變堅固

He has been brought in to strengthen the defence. 已請他來加強后衛(wèi)力量。

We will strengthen the protection of wet land. 我們將加強濕地保護。

Every effort was made to strengthen unity. 大家盡力加強團結。

The wind strengthened during the night. 風在夜間刮得更猛了。

strengthen的基本意思是使某物牢固,用于具體物質時,可指結構、強度的增強; 也可用于抽象事物,如權勢、效力、影響、體制的增強; 用于人既可指體力、精力、抵抗力的增強,也可指勇氣、意志、道德等的增強或提升。

strengthen既可用作及物動詞,也可用作不及物動詞。用作及物動詞時,可接名詞或代詞作賓語。可用于被動結構。