go to waste

be unused or expended to no purpose

被浪費(fèi)掉

lay waste to (或lay something (to) waste)

completely destroy

完全毀壞

a land laid waste by war.

被戰(zhàn)爭(zhēng)完全毀壞的國(guó)家。

waste one's breath

a land laid waste by war.

被戰(zhàn)爭(zhēng)完全毀壞的國(guó)家。

waste of space

(informal)a person perceived as useless or incompetent

(非正式)無(wú)用之人，無(wú)能之輩

waste not, want not

(proverb)if you use a commodity or resource carefully and without extravagance you will never be in need

(諺)不浪費(fèi)，不愁缺

waste words

waste (one's) breath

To gain or accomplish nothing by speaking.

徒費(fèi)口舌：費(fèi)了口舌卻一無(wú)所獲