【伶萱】評論
A ~of都指一群，但在不同生物上，～用的詞不同，如下：
【ˊˇˋฅ】評論
What's worse, the wave-like bobbing heads in front of my eyes made me feel as though there were a herd of elephants running hard in my stomach.更糟的是,眼前魚貫群眾的頭像海浪般的竄動,使我感到像是有一群大象在我胃裡狂奔。 a herd of 一群(動物)