Anabaena
n. 淡水藻类的一种, 项圈藻
🗣️ 情景例句
That's for a long distance call you make two nights ago.
这是你两天前打的一个长途电话的费用。
Judge not a book by its cover.
评定一本书，不能凭封面。
I want to improve, but I don't know how.
我想提高它，但又不知道怎么样才能提高。