Docodonta
柱齿目
🗣️ 情景例句
I've got to keep my nose to the grindstone to support my family.
我拼命工作养家。
Work makes the workman.
工作出工匠。
It is bacteria that have generated the oxygen we breathe on earth.
正是细菌生产出我们在地球上呼吸的氧气。