Loafing
v. 游荡（loaf的现在分词形式）
✅ 同义词
🔴 反义词
🗣️ 情景例句
One of my patients has a high fever,
我的一位病人发高烧，
I speak the dialect perfectly.
我方言说得很好。
and we have only to turn to that extraordinary discovery of echo-location in bats to see a case in which the voice plays a strictly utilitarian role.
我们只要看一看蝙蝠回声定位这一极不寻常的发现，就可以探究一下声音在什么情况下有绝对的实用价值。