Anadromous
a. 溯河產卵的
??? 情景例句
You sounded like you've made a decision
你好像已經作了決定
You'll solve the problem if you concentrate upon it.
如果全神貫注，你就會解決這個問題。
no more than one or twofeet thick.
氣墊只有一兩英尺厚。