Each year companies in the United States could save as much as $58 billion annually by preventing illness among employees and gain as much as 0 billion through improving performance of workers if they simply provided offices with cleaner air.
语法 Sentence Correction-3166
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时光老人 2015-12-29 10:15:29
each year与annually重复、 through improving不符合逻辑，应该是一个结果导致的，不是一个过程。
IvanGao 2016-07-04 21:06:27
each year和annually 重复
Vivianvivian 2014-12-15 04:52:23
each year和annually重复
halowwww 2016-12-25 22:38:33
annually和each year意思表达重复
LaraNg 2016-09-17 21:26:31
each year, annually 重复
琴惊 2016-08-02 20:47:23
each year和annually重复
EmeraldChen 2016-07-05 12:11:52
annually和each year重复 ABC都错！
siasiasia 2016-04-08 17:02:23
annually重复；
tian4690 2016-03-30 12:06:42
annually和each year意思表达重复
ypheroin 2015-12-26 17:19:05
1. each year 与annually重复 2. preventing 和 improving 都有正在进行的意思，但原句陈述的是一个已经发生的事实。
vickiaro 2015-10-31 11:00:22
1）each year和annually句意重复了啊！！！ 2）by和thought是有区别的，不要盲目追求平行。Though：有事情已经完成之义，“做成了”。By：指现在或是将来的时间，“在做”。所以这里through improved performance更合适。
