用retum造句（不要太简单的）同上
问题描述：
用retum造句（不要太简单的）
同上
答
On his return he reported his findings to the committee.
答
你是说 retum 还是return
retum没这个词
return:
The echo was returned by the canyon wall.
回声是峡谷壁传回来的