Rhizocephalan
n. [動] 根頭目甲殼動物
??? 情景例句
That's reassuring.
真令人安心。
What's the matter with you?
你怎么了？
In this way, we have learned all that we know of the laws of astronomy,
例如，用這種方法，我們完全掌握了天文學(xué)的規(guī)律。