Cetane
n. 十六烷, 鲸蜡烷\\n[化] 十六烷; 十六碳烷; 鲸蜡烷
🗣️ 情景例句
John is tied up at the present time.
John现在有事。
I wrote several letters on my mother's behalf.
我代表我母亲写了几封信。
But a watch could never repair itself----it does not consist of living parts,
但是，手表决不会自行修理，它不是由有生命的部件组成，