Planorbis
[医] 扁卷螺属
🗣️ 情景例句
Pete isn't home.
Pete不在家。
I apologize.
我表示歉意。
Fortunately, however, ancient men made tools of stone, especially flint,
然而， 幸运的是，远古人用石头制作了工具，特别是用燧石，