Actinost
[动]鳍条基骨
🗣️ 情景例句
Hi, Pop. Hi, Son.
你好， 爸。你好 ，儿子。
You walk so fast that I can't keep up with you.
你走得太快，我跟不上你。
I don't think this is a standard size.
我看这不是标准尺寸吧？