Entomostracan
a. 切甲類的,昆甲類的
??? 情景例句
Don't worry.
別愁。
In secondary school, children study mathmatic、phsicas and chemistry.
中學的小孩會讀到數學、物理和化學。
There is a stereo in the room.
客廳里有臺立體聲音響。