Infusorian
n. 纖毛蟲\\na. 纖毛蟲的
??? 情景例句
That's reassuring.
真令人安心。
Let's keep in touch.
讓我們保持聯(lián)系。
How it came about that snakes manufactured poison is a mystery.
蛇是怎樣產生毒液的，這是一個謎。