Other amenities, less commonly available, include a library and exercise room
还有一些不太常有的设施，包括图书馆和健身房。
Grey-market perfumes and toiletries are now commonly sold by mail.
水货香水和化妆品现在常常通过邮购方式售卖。
Obsessional personalities commonly ruminate excessively about death.
有强迫症的`人通常过多地思考死亡的问题。
Leagues are commonly made for mutual defense.
结成联盟往往是为了共同防御。
When men are most sure and arrogant, they are commonly most mistaken.
人们过于自信和过于傲慢之时也正是他们最易犯错之日。