swifts
n.
雨燕( swift的名词复数 );
（梳棉机等的）大滚筒;
[动物]（爬行迅速的）小蜥蜴( = spiny lizard);
绷架;
例句:
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Fossil evidence demonstrates the existence of swifts during that period in Europe.
来自BBC
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Conservationists have been concerned about the decline in numbers of summer migrants such as house martins and swifts.
来自BBC
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For this, snails or spiders are a good choice, whereas swifts and peregrines are probably not.
来自BBC