early 15c., "not in accord with physical nature," from un- (1) "not" + natural (adj.). Meaning "artificial" is attested from 1746; that of "at variance with moral standards" is from 1520s. Related: Unnaturally; unnaturalness.
雙語例句
1. She gave him a bright, determined smile which seemed unnatural.
她對他開朗、堅定地一笑，但笑得有點不自然。
來自柯林斯例句
2. I consider activities such as jogging and weightlifting as unnatural.
我認為像慢跑、舉重這樣的運動不符合自然規律。
來自柯林斯例句
3. The aircraft rose with unnatural speed on take-off.
那架飛機以反常的速度起飛升空。
來自柯林斯例句
4. The altered landscape looks unnatural and weird.
改造后的景觀看起來很不自然，極其怪異。
來自柯林斯例句
5. It seems unnatural for a child to spend so much time alone.