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
Don't lose your cool.
要沉住气。
Well done, friend.
朋友，做得好。
Through my hands and fingers, I heard the sounds that one hears on a farm, the noises made by cows, horses, chickens and pigs.
通过手和手指，我听到了人们通常在农场所听到的声音--即牛、马、鸡、猪等叫出的声音。