Ectogene
外因
🗣️ 情景例句
Have you got any experience in advertising?
你有广告方面的经验吗？
The fire is the test of gold;adversity of strong man.
烈火试真金，困苦炼壮士。
She hired a car by the hour.
她租了一辆按钟点计费的汽车。