love affair

英 [ˈlʌv əfeə(r)]

美 [ˈlʌv əfer]

n. 风流韵事; (非夫妻间的)性关系; (对某事)极大的热情，强烈的兴趣

Collins.1

牛津词典

noun

风流韵事；（非夫妻间的）性关系
a romantic and/or sexual relationship between two people who are in love and not married to each other
（对某事）极大的热情，强烈的兴趣
great enthusiasm for sth
1. the English love affair with gardening
  英格兰人对园艺的热爱

N-COUNT 风流韵事；（非夫妻或同居情侣间的）恋爱（或性）关系
Alove affairis a romantic and usually sexual relationship between two people who love each other but who are not married or living together.
1. ...a stressful love affair with a married man.
  与一个已婚男人的痛苦婚外情
N-SING 极大的喜爱；强烈的的兴趣
If you refer to someone'slove affair withsomething, you mean that they like it a lot and are very enthusiastic about it.
1. ...the American love affair with firearms...
  美国人对枪支的癖好
2. Tom's love affair with France and most things French knew no bounds.
  汤姆对法国和大多数法国东西都无比热爱。

noun

Tom's love affair with France and most things French knew no bounds.
汤姆对法国和大多数法国东西都无比热爱。
But his love affair with Alicia, he says, is 'just like a movie.
而他与艾丽西娅的爱情，用他的话说，'就像是一部电影。
His wife left him when she found out about his love affair.
当他的老婆发现他有外遇时便离开了他。
As he continues his revolt, he also has a love affair with Isabella, Edward's daughter-in-law.
他继续领导起义，同时与爱德华的儿媳妇伊莎贝拉擦出爱的火花。
Samantha: Let's hear what the worldwide love affair with the romance novel is about, in Dateline USA.
萨曼莎：在美国报道中，让我们来听听全世界与浪漫小说的相恋吧。
She behaved very tactlessly in reminding him of their love affair.
她提醒他别忘了他俩间的恋爱关系，说得很不策略。
And all these somehow became the beginning of an invisible love affair between us two.
而这就很快变成了我们隐形恋情的开端。
She had a lesbian love affair with her secretary.
她和她的秘书搞过同性恋。
He hits the ceiling at the mere mention of his unsuccessful love affair with Emily.
一提到他和埃米莉之间不成功的罗曼史，他就要大发雷霆。
He has a love affair with that beautiful woman.
他和那个美丽的女子关系暧昧。