Powell
n. 鲍威尔（英国物理学家）
🗣️ 情景例句
I'll go upstairs and stay with him until he falls asleep again.
我上楼去陪他， 直到他又睡着。
No practice, no gain in one's wit.
吃一堑，长一智。
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。