徒劳无益

avail oneself of

利用,趁(...机会)

avail有益,有利,利益,利用 | avail oneself of利用,趁(...机会) | of no avail无用,无效,徒劳无益

burn one's boats

破釜沉舟,背水布阵

Ⅶ.burn dayligt.白日点灯,徒劳无益 | Ⅷ.burn one's boats.破釜沉舟,背水布阵 | Ⅸ.burn oneself out.筋疲力尽

when I cry out for the bark

我觉出了寒意

I feel cold 徒劳无益的痛哭时 | when I cry out for the bark 我觉出了寒意 | take him back to Avalon 带他回阿瓦隆

e.g This store has an excellent reputation for fair dealing

名声,名誉

in vain 白费地,徒劳无益的 | in order to 为了- | reputation 名声,名誉 e.g This store has an excellent reputation for fair dealing.

shove the file into an .obj shove

推

wild goose chase 徒劳无益的追求 | shove the file into an .obj shove 推 | give sth much thought 仔细想某事

fish out of water

离了水的鱼

Fish in troubles water. 浑水摸鱼. | Fish out of water 离了水的鱼 | flog a dead horse 徒劳无益

Get sb's goat

(俚)惹某人发火

11.Get sb's goat(俚)惹某人发火 | 12.Ride the goat加入秘密团体 | 13.Milk the ram作徒劳无益的事

shoe the goose

徒劳无益

shoe lifter 鞋拔 | shoe the goose 徒劳无益 | shoe tree 鞋楦

shoe the goose

徒劳无益, 白费力气

make a goose of sb. 瞒骗[愚弄]某人 | shoe the goose 徒劳无益, 白费力气 | swim like a tailor's goose [谑]沉下去

drop a bucket into an empty well

空井打水, 徒劳无益

drop a brick 出丑, 失言. | drop a bucket into an empty well 空井打水, 徒劳无益. | drop a clanger 说出不得体或令人困窘的话, 当众失言.

of a composite function：复合函数之导数

Derivative :导数 | of a composite function :复合函数之导数 | of a constant function :常数函数之导数

enriched lake：富营养湖

LRPA Long-Range Patrol Aircraft 远程巡逻飞机 | enriched lake 富营养湖 | bang it about 决胜负 诉诸武力