Metatheria
后哺乳下纲
🗣️ 情景例句
At 4, but I have to leave by 3:00 to get there on time.
四点，不过我三点必须离开，才能准时到那里。
A good book is a best friend who never turns his back upon us.
一本好书，莫逆之交。
A Festival for the Dead is held once a year in Japan.
日本每年过一次“亡灵节”。