Ophioglossidae
瓶尔小草纲
🗣️ 情景例句
Why is that necessary?
为什么有此必要
There is a time to speak and a time to be silent.
该说话时说话，该沈默时沈默。
OK. Let me help you. There! OK?
我来帮你，瞧，行了吧？