Hard residue
[化] 硬性残留物(未降解的表面活性剂)
🧩 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
He's the sweetest little thing.
他是最可爱的小家伙。
I'll try, but I may have to work late.
就这样办，不过，昨晚工作怕要很晚了。
I'd like to congratulate you very much. That was a wonderful concert.
衷心祝贺你。这场音乐会真是太好了。