Astacus
[医] 螯虾属(若干种为肺吸虫的第二中间宿主)
🗣️ 情景例句
Now, this is my idea of a good time.
这才是我所谓的享受。
Never judge by appearances.
人不可貌相。
a wave length (the horizontal distance between two wave crests),
波长（两个浪峰间的水平距离）