英语翻译重点短语(keep free from)语法正确

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英语翻译重点短语(keepfreefrom)语法正确英语翻译重点短语(keepfreefrom)语法正确英语翻译重点短语(keepfreefrom)语法正确Hetriedhisbesttokeepth

英语翻译重点短语(keep free from)语法正确
英语翻译
重点短语(keep free from)
语法正确

英语翻译重点短语(keep free from)语法正确
He tried his best to keep the river free from pollution.

He tries his best to keep the river freeing from pollution.

he tried all efforts to keep the river free from pollution

he try his best to keep river free from polluting.

He tried to protect the rivers against pollutions。有道词典翻译的。呵呵。好像对着吧。

he keeps the river free from pullution