Florisil
硅酸镁载体
🗣️ 情景例句
Are you kidding?
在开玩笑吗?
The window-washer has a dangerous job.
玻璃清洁工担负着危险的工作。
The winch was again put into operation and one of the men started up the truck.
绞盘机再次启动，一位工人发动了急修车的引擎。