Cylindrosymmetry
圆柱对称
🗣️ 情景例句
It's nice to see you again.
很高兴再见到你们。
It's hard sailing when there is no wind.
没有风难航行。
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。