flagging
[ˈflæɡɪŋ]
n.
铺砌石板，铺石材料，石板路;
adj.
下垂的;
衰弱的;
委顿的;
逐渐衰退（或减退、低落）的;
例句:
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Marlette was already out of the door, flagging down a taxi.
马利特已经出门了，正挥手招呼一辆出租车。
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His enthusiasm was in no way flagging.
他的热情丝毫未减。
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Despite numerous failures, they continued to conduct the experiment without flagging.
尽管实验几次都失败了, 他们仍毫不气馁地继续进行.
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Its sails were flagging in the breathless noon.
来自Shelley
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The flagging world economy has prompted a rise in protectionism.
来自BBC
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With ruffled plumes and flagging wing.
来自T. Gray