英语法语 This echo-location in bats is often compared with radar,the principle of which is similar
后面这个补充修饰的句子,which 指代的是 echo-location in bats 么 句子有省略 即 ：This echo-location in bats is often compared with radar,the principle of which is similar to redar.
要改倒装是 Often compared with radar is this echo-location in bats ,the principle of which is similar to radar .