Hard acid
[机] 硬酸
🧩 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;
🗣️ 情景例句
Don't worry.
别愁。
Often, when it rains, Marty feels blue.
一下雨，玛琪就会变得忧郁。
There is hope so long as he is with us.
只要他在就有希望。