Nanocatalyst
纳米催化剂
🗣️ 情景例句
OK. We'll ring you up at 6:00 a.m. tomorrow.
嗯，我们会在明天6点整叫您。
It's not too heavy,but I don't know the exact weight.
它不是太重的，但是我不知道准确的重量。
At the end of the first lap, Li Lei quickly passed the stick on to Jim.
在第一圈结束时，李磊迅速地将棒传给吉姆。