(1)选择(权，自由)(right or power to choose)[U]：You have no other/no/little～.你别无选择/毫无选择的余地/几乎没有选择的余地。He had little～but to agree.他几乎没有选择的余地，只能同意。You have the～of leaving or staying.你可选择留下或离开。Every voter should exercise his～.每个投票人都应该履行自己的选择权。〖同〗will，decision，voice;〖反〗compulsion，requirement，obligation，necessity;

(2)可供选择的事物;选择(sth chosen or available as a choice)[C]：None of the～s is satisfactory.可选择的东西没有一样令人满意。How many～s are there open to us?我们有几种选择?They urged me to go for the first～.他们劝我采取第一个备选方案。〖同〗choice，alternative，selection;

(3)选择买卖权(exclusive right to buy or sell property within a specified time and at a spe-cified price)[C][N(on)]：He has an～on that house.他拥有那座房子的购买权。have a two-week～on sth 对某物有两周的选择权;I've already sold an～on this story for a film.我已把那篇小说的电影剧本改编权卖掉了。The man paid $500 for an～on the land.那人付500美元获得那块土地的购买权。

→′optional adj 可供选择的;

【辨异】option与alternative和choice的区别见ALTERNATIVE。