Catalyst reduction
[化] 催化剂再生
🧩 词语组成解析
🗣️ 情景例句
She called to say the plane was delayed.
她打电话回来， 告诉我们飞机误点。
She finally began to get angry when Paul didn't arrive.
当保罗没有到达时，她终于开始生气了。
Are these bags heavy? No, they're light.
不，是轻的。