复数 hards
比较级 harder，最高级 hardest
If you don't work hard on your own, it's useless for others to help you any more.
你自己不努力，别人再帮助也徒劳无益。
2
The mountain is covered with hard granite.
山上到处都是坚硬的花岗岩。
3
Walking on the hard, I felt extremely relaxed.
走在穿过前滨的路上，我感到无比放松。
