名词
中文翻译：主题替换
同义词：
['substitute', 'replace', 'substitute for']
例句：
-
1.The teacher asked the students to replace the old textbooks with new ones.
老师要求学生们用新的教科书替换旧的。
-
2. She replaced her broken phone with a new one.
她用一部新手机替换了坏掉的手机。
-
3.He was asked to replace his old car with a more fuel-efficient model.
他被要求用更省油的车型替换他的旧车。