Clide
放射性核素浓度
🗣️ 情景例句
Let's take a ten-minute break.
我们休息十分钟吧。
Would you take this coat to the cleaner's?
你可以把这件外套送到洗衣店吗？
in the belief that they may one day need just those very things.
相信总有一天需要的正好是那些东西。