正装衬衫和商务衬衫都有一个共同点：长袖。
Dress shirts and business shirts all have one thing in common: long sleeves.
如果你知道商务聚会是非正式的，在户外或在很热的地方举行，选择没有皱纹的开领短袖衬衫也恰如其分。
Polo shirts, unwrinkled, are an appropriate choice if you know the environment will be quite casual, outdoors or in a very hot location.
不过，牛仔裤必须精心搭配熨烫平整的衬衫和上好的鞋子，才能提升到商务层次。
But jeans must be carefully paired with a pressed shirt and good shoes to be elevated to business class.
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