"Perhaps," said Colin, prompted by a sudden inspiration, "perhaps it is an unnatural appetite."

“也许吧，”柯林说，他突然灵机一动，说道：“也许这是种不正常的胃口。”

youdao

Dyslexia manifests itself as a difficulty with a highly unnatural activity: reading.

阅读障碍被认为是一种阅读困难，而阅读是一种高度非自然的活动。

youdao

She gave him a bright, determined smile which seemed unnatural.

她给了他一个快乐、坚定、看似不自然的微笑。

《柯林斯英汉双解大词典》

The idea of the New, Humble Jets sounded unnatural and a little phony, designed more to placate media yowlers and fans than a real reflection of a cultural shift.

WSJ: Jason Gay: Let's Go Eat Another Bleeping Snack

For more than 10 years, he says he has bought and sold apartments where a tenant died an unnatural death, paying a third less than the market price and later selling at a healthy profit.

WSJ: Hong Kong's Real-Estate Boom Conjures a Scary Development

In early 2005, even after the launch of the Nintendo DS, Switched On critiqued pen computing, noting that it was too cumbersome and unnatural to become a mainstream input method.

ENGADGET: Switched On: Token gestures