A herd of
一群
🧩 词语组成解析
herd
[hɝd]
n. 兽群;牧群;放牧人;<蔑>群众，民众;
vt.& vi. 群集，纠结;
vt. 放牧;（使）向…移动;使成群;
of
[əv]
prep. 关于;属于…的;由…制成;
aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气];
🗣️ 情景例句
You would be well-advised to book in advance.
你还是提前预订较为稳妥。
He's studying his lesson.
他正在学习课程。
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。