Joe has a bad back so we have a hard bed.

乔的背不好，所以我们睡硬板床。

《柯林斯英汉双解大词典》

Teeth have a hard surface layer called enamel.

牙齿有一层叫做釉质的坚硬表层。

《牛津词典》

A conclusion has been drawn from many experiments that anumeric people have a hard time distinguishing quantities.

从许多实验中得出的结论是，（语言中）没有数词的人很难区分数量。

youdao

Chinese tires make up and most are lower-end tires that retailers may have a hard time buying elsewhere.

VOA: standard.2009.09.14

In cases where you have a hard decision to make, you know you're not racist.

假如你碰上一个难以抉择的情况，你知道你不是种族主义者。

耶鲁公开课 - 心理学导论课程节选

So it's often, I think people have a hard time delivering bad news,

有些时候，人们会觉得告诉客户坏消息是很难的事情，

正直是最好的 - SpeakingMax英语口语达人

Being a very successful woman myself, I have a hard time finding men who understand my drive.

FORBES: Readers Say

Home values have plummeted and continue to have a hard time sustaining their value.

WHITEHOUSE: Press Briefing

Remember that many Medicaid enrollees have a hard time finding a doctor who will see them.

FORBES: The Arkansas-Obamacare Medicaid Deal: Far Less Than It First Appeared