slowed
v.
（使）缓行， （使）减速( slow的过去式和过去分词 );
例句:
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The traffic on the approach road slowed to a crawl.
引路上车辆行驶缓慢。
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Injury has slowed Lawes' rise through international rugby.
来自BBC
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The flood of cars has now slowed to a trickle.
汹涌的车流现在已经变得稀稀拉拉。
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He was still taking some medication which slowed him down.
他仍然在服用能够让他放松下来的药物。
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Could they have slowed,stopped or reversed direction?
来自SA
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He says rice exports to Iran had slowed down.
来自VOA