1·I think one warm suit and one lightweight suit will be enough.
我看一套厚的、一套薄的就够了。
2·He was wearing a grey lightweight suit as opposed to his usual check sports jacket.
那天他穿着一套灰色薄型西服而不是平常所穿的方格运动衫。
3·Men can wear a lightweight linen suit or dress pants-and-blazer combination in a light color, necktie optional.
男士可以穿轻质亚麻套装或一身浅色西服上衣和长裤，当然也可以选择打领带。