Varion
一种离子交换树脂
🗣️ 情景例句
There is nothing better than a hot dog in the country.
在美国没有比热狗更好的东西了。
Bread is the staff of life.
民以食为天。
A week before, he had completed a successful overland flight during which he covered twenty-six miles.
一周以前，他曾成功地进行了一次26英里的陆上飞行。