Of course, it would be best for a man to match his suit with a suitable tie, and it would be the first choice for a lady to wear a professional woman's suit when taking part in a business activity.

当然，男士穿西装配上相称的领带是最好不过的了，而女士穿上职业套裙更是参加商务活动的首选。

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For men, black tie optional means it's not wrong to wear a tux, if you like—but if you'd be happier in a dark suit and tie, you won't be underdressed.

对男士来说，可选择的黑领结意味着，如果你喜欢的话，穿无尾晚礼服不会有错，但是，如果你更愿意选择深色西服和领带，这样也不会太随便。

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