🧩 词语组成解析
genus
['dʒi:nəs]
n. （动植物的）属;类;种;型;
🗣️ 情景例句
I must meet the deadline.
我必须赶上最后期限。
To have a grandson
有了孙子
Once the existence of this wave-length had been discovered,
一旦这种波长的实际存在被发现，