1.坚硬的,坚固的.as hard as rock
2.困难的(地)a hard exam
3.辛苦的,费力的hard work
4.艰难的i had a hard childhood
5.严厉的a hard winter
6.努力地try hard
7.猛烈地rain hard
1.坚硬的,坚固的.as hard as rock
2.困难的(地)a hard exam
3.辛苦的,费力的hard work
4.艰难的i had a hard childhood
5.严厉的a hard winter
6.努力地try hard
7.猛烈地rain hard