Arthrocentesis
关节穿刺术
🗣️ 情景例句
the first settlers in America.
他们是第一批来美国定居的移民。
A lamb is as dear to a poor man as an ox to the rich.
穷人的一只羔羊比富人的一头牛还要珍贵。
Despite the fact that the bottle is tinted a delicate shade of green, an observant visitor would soon notice that it is filled with what looks like a thick, grayish substance.
尽管那只瓶子呈淡绿色，但细心的客人很快就会发现瓶里装的是一种看上去黏稠，颜色发灰的东西。