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a series of: 一系列
a variety of: 各种各样的
above all: 首要的是,尤其
account for: 说明(解释)…的原因
add up to: 总计达,总共是
after all: 毕竟,究竟
ahead of: 在…之前
all at once: 突然,同时
all but几乎,差不多,除了…之外都
and so forth: 等等
as a rule: 通常,一般来说
as follows: 列举如下
as regards: 关于, 至于
aside from:除了…之外
at a loss: 不知所措,亏本
at all events:在任何情况下,无论如何
at intervals: 不时,相隔一定距离
at large: 一般说来
at length: 充分地,详尽地
at the mercy of:任…摆布,在…前毫无办法
at times: 有时
back and forth: 来回地
be absorbed in: 全神贯注于,专心致志于
be attached to:附属于,喜爱
be concerned with: 与…有关系
e.g. This story is concerned with a Russian story in the 19th century.
break down:损坏, 发生故障
break off:(使)突然结束,中断
e.g.We broke off (work) for a cup of tea.
break out: 突然发生,爆发
break up:打碎,拆散
e.g. The ship broke up on the rocks.
bring forth: 生产(尢指生孩子):开(花);出(芽)