house martin
US /ˈhaʊs ˌmɑːr.tɪn/
UK /ˈhaʊs ˌmɑːr.tɪn/
1.
家燕
a small swallow-like bird with a forked tail, blue-black upperparts, and white underparts, typically nesting in colonies on buildings
:
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A house martin built its nest under the eaves of our roof.
一只家燕在我们的屋檐下筑巢。
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We watched the house martins darting through the air, catching insects.
我们看着家燕在空中穿梭，捕捉昆虫。