一般用英語怎麼表達

Other amenities, less commonly available, include a library and exercise room

還有一些不太常有的設施，包括圖書館和健身房。

Grey-market perfumes and toiletries are now commonly sold by mail.

水貨香水和化妝品現在常常透過郵購方式售賣。

Obsessional personalities commonly ruminate excessively about death.

有強迫症的人通常過多地思考死亡的問題。

Leagues are commonly made for mutual defense.

結成聯盟往往是爲了共同防禦。

When men are most sure and arrogant, they are commonly most mistaken.

人們過於自信和過於傲慢之時也正是他們最易犯錯之日。