vi.禁食,(尤指)斋戒(fast的第三人称单数形式);
例句:
She fasts on Fridays.
她在星期五斋戒.
She fasts once every week, and she has lost ten pound.
她每周绝食一次, 至今她的体重已减了十磅.
She fasts a day every week.
她每周绝食一天.