Hard-sphere collision theory
[机] 硬球碰撞理论
🧩 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;
sphere
[sfɪr]
n. 球（体）;（兴趣或活动的）范围;势力范围;天体，如行星或恒星;
vt. 形成球体;包围，围绕;置于球面内部;
spher(ball)+e(名词后缀)→球；球体；天体；范围；地位
🗣️ 情景例句
She tore up all the letters he had sent her.
她把他写来的信全撕了。
Please tell him to stop running in and out.
请告诉他不要跑进跑出。
It's too hard. Oh, dear! Is it broken?
太难了，天那！风筝被弄坏了！