新政策不仅降低了成本，还提升了员工满意度。
Not only did the new policy reduce costs, but it improved employee satisfaction as well.
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not英 /nɒt/|美 /nɑt/
only英 /ˈəʊnli/|美 /ˈoʊnli/
did英 /dɪd/|美 /dɪd/
but英 /bʌt/|美 /bʌt/
解释
not only 置于句首后助动词 did 前置主语构成倒装，but 引出第二分句递进
Not only did the new policy reduce costs, but it improved employee satisfaction as well.
not only 置于句首后助动词 did 前置主语构成倒装，but 引出第二分句递进