Specific activity
[化] 比活; 比活度; 比放射性; 放射性比度\\n[医] 特殊活动
🧩 词语组成解析
🗣️ 情景例句
We're having a good time, and they're in good hands.
我们玩得痛快，他们也得到很好的照顾。
A man without a smiling face must not open a shop.
人无笑脸，不要开店。
Finally, turn off the lights and lock the door.
最后，关上灯，锁好门。