1. 奢侈；奢华；奢侈的享受
    Luxury is very great comfort, especially among beautiful and expensive surroundings.

luxury

    e.g. By all accounts he leads a life of considerable luxury...
           据说他的生活颇为奢侈。
    e.g. She was brought up in an atmosphere of luxury and wealth.
           她在锦衣玉食的环境中长大。

2. 奢侈品
    A luxury is something expensive which is not necessary but which gives you pleasure.

    e.g. A week by the sea is a luxury they can no longer afford...
           到海边度假一周成了他们再也消费不起的一种奢侈。
    e.g. Telephones are still a luxury in some parts of Spain, Portugal, and Greece.
           在西班牙、葡萄牙和希腊的一些地方，电话仍然是奢侈品。

3. 奢侈的；奢华的
    A luxury item is something expensive which is not necessary but which gives you pleasure.

    e.g. He could not afford luxury food on his pay...
           靠自己的工资他买不起奢侈的食品。
    e.g. He rode on the president's luxury train through his own state.
           他乘坐总统的豪华列车经过自己所在的州。

4. 不常有的乐趣；难得的享受
    A luxury is a pleasure which you do not often have the opportunity to enjoy.

    e.g. Hot baths are my favourite luxury...
           泡个热水澡是我的最大乐事。
    e.g. We were going to have the luxury of a free weekend, to rest and do whatever we pleased.
           我们将有一个难得空闲的周末，可以休息，还可以高兴干什么就干什么。