每月一次

Then i noticed that there was a notice beside the mailboxes of households.It said"almsdeed for Mrs Green ,pls signyour name if you'd like to pick up and drop off her twice for Chemotherapy "

我注意到在住户的邮箱旁贴了一张布告，上面写着："对格林夫人的善举：愿意每月接送两次住在3B室的格林夫人去医院做化疗的人请在下面签名。"

The entire crew need not be involved in every drill,but each crew member must participate in an abandon ship drill and a fire drill each month as required.

每次演习中不必全体船员都参与，但是每一船员都必须按要求每月参加1次弃船和消防演习。

A team from the University of Wollongong compared people who paid for a years gym membership in advance to those who signed a contract but paid by fortnightly salary deductions.

研究结果表明，一年一付的人平均每月锻炼5次，而两周一付的人每月锻炼8次。

Objective To investigate the effects of interleukin-1 β converting enzyme gene on the biologic characteristics of ovarian cancer cells.

目的 探讨白细胞介素-1 β转换酶的表达，对卵巢癌细胞生物学特性的影响。

Campylobacter: This illness is the most commonly identified cause of diarrheal illness in the world.

弯曲：这种病是最常见的原因查明腹泻病，在世界上。