Diploplacula
[动]双扁囊胚幼虫
🗣️ 情景例句
Everyone is expected to stick to the rules.
每个人都要遵守规则。
The speaker kept wandering off.
演讲的那个人老是走题。
What about the Natural History Museum? So far as I know, it's free.
去自然历史博物馆怎么样？据我所知，那儿是免费的。