Activity test
[化] 活性试验; 催化剂的活性试验
🧩 词语组成解析
🗣️ 情景例句
Keep quiet about it if you know what's good for you.
什么也别说，免得你自个儿添不自在。
Diligence is the mohter of success.
勤奋是成功之母。
The lawyer ascertained that a policeman had indeed dealt roughly with foreigners on several occasions.
律师证实有个警察确实多次粗鲁地对待外国人。