hard 
英 [hɑːd]  美 [hɑrd] 
adv. 努力地；严重地；呈锐角

adj. 硬的；困难的；有力的；费力的；凛冽的；冷酷无情的；刺耳的；硬音的；酒精含量高的

例句：
The green apples were as hard as rocks. 

青苹果像石头一样硬。

His hands were hard and strong from years of work. 

长年劳作使他的双手粗硬有力。

The team always played hard. 

球队总是打得很卖力。

He drove hard left. 

他尽可能靠左行驶。