hard

US /hɑːrd/
UK /hɑːrd/
"hard" picture
1.

坚硬的, 硬的

solid, firm, and resistant to pressure; not easily broken, cut, or pierced

:
The ground was hard from the frost.
地面因霜冻而变得坚硬
Diamonds are the hardest known natural material.
钻石是已知最坚硬的天然材料。
2.

困难的, 难的

difficult to do, understand, or deal with

:
It was a hard decision to make.
那是一个艰难的决定。
The exam was really hard.
考试真的非常
3.

辛勤的, 费力的

needing or using a lot of effort or energy

:
She put in a lot of hard work.
她付出了很多辛勤的工作。
It's a hard climb to the top of the mountain.
爬到山顶是一段艰难的攀登。
1.

努力地, 猛烈地

with a great deal of effort or intensity

:
He worked hard to finish the project on time.
努力工作以按时完成项目。
It rained hard all night.
雨下了一整夜,下得很大
2.

困难地, 费力地

with difficulty

:
He breathed hard after running the marathon.
跑完马拉松后,他呼吸困难
She found it hard to believe his story.
她发现很难相信他的故事。