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
You are my best friend in the whole world.
你是我在这个世界上最好的朋友。
I don't buy it.
我才不信邪。
She does not know London very well, and she lost her way.
她对伦敦不很熟悉，因此迷了路。