Radiolabelled
放射性同位素示踪[标记]的
🗣️ 情景例句
When are you planning to get married?
你准备什么时候结婚？
Every tide hath ist ebb.
潮涨必有潮落时。
Oh, and by the way, my wife wants to know if Mary needs any help.
喔，顺便问一问，我妻子想知道玛丽是否需要帮忙。