learn by heart=?解释句子(用英语解释它)

问题描述:

learn by heart=?解释句子(用英语解释它)
还有翻译句子能改成被动吗?the waste water pollute river 可以改成the river was polluted by waste water吗?

用心学习 也有用心记住的意思
可以的
例如:After listening,his words was all learned by heart.
还有最后一个也是可以的
有什么不明白你还可以问我