Echolocating
(echolocate 的现在分词) vt.凭回声(或回波)测定…的方向(或位置)
🗣️ 情景例句
Keeping busy. Yourself?
一直很忙，你呢？
If I had known her telephone number, I would have called her.
如果我知道她的电话号码，我就给她打电话了。
Fortunately, however, ancient men made tools of stone, especially flint,
然而， 幸运的是，远古人用石头制作了工具，特别是用燧石，