Hard knocks
不幸, 困苦, 挫折
🧩 词语组成解析
hard
[hɑrd]
adj. 困难的;硬的;有力的;努力的;
adv. 努力地;猛力地;严重地;沉重地;
n. 英〉硬海滩，登陆处;
n. 短促的敲打（声）( knock的名词复数 ); 爆震声; 敲击声; 敲门（或窗等）声\\nv. 敲, 击, 打( knock的第三人称单数 ); （心）怦怦跳; 把…撞击成（某种状态）; 批评
🗣️ 情景例句
There's another advanced class today at four o'clock.
今天下午四点钟还有一次高级班。
Do not give a dog bread every time he wags his tail.
不要有求必应。
The door is opened by his son, Gary.
开门的是他的儿子加里。