blazer
US /ˈbleɪ.zɚ/
UK /ˈbleɪ.zɚ/

1.
西裝外套, 休閒西裝
a lightweight jacket, typically solid-colored, often worn as part of a uniform or for smart casual occasions
:
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He wore a navy blazer with khaki pants.
他穿著一件海軍藍西裝外套和卡其褲。
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The school uniform includes a grey blazer.
校服包括一件灰色西裝外套。