Hard science
自然科学
🧩 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
Affectionately, Uncle John.
爱你的，约翰叔叔。
You had better wash those dirty clothes.
你该去把那些脏衣服洗一洗。
By the way, I came into this classroom last Saturday morning, and it was not as clean as usual.
顺便提一句，上星期六上午我来到这个教室时