例句：There is absolutely no such thing as love or hatred without any reason or cause.

　　世上没有无缘无故的爱，也没有无缘无故的恨。

　　2.blood relationship  血缘

　　例句：Serology of 23 Gray Leaf Spot Pathogens Blood Relationship.

　　23个玉米灰斑病菌菌株亲缘关系的血清学研究。

　　3. tie the nuptial knot  喜结良缘

　　例句：Under French law , couples must tie the knot before a mayor to make their union official .

　　根据法国法律，新人举行婚礼必须有市长见证，才可正式结为合法夫妻。

　　4.Fate brings together people who are far apart.

　　有缘终相逢。

　　5. A good marriage arranged in Heaven

　　天赐良缘。

　　6.I can't tell the true shape of Lu Shan ,because I myself am on the mountain.

　　不识庐山真面目，只缘身在此山中。

　　7.Two beings destined to marry each other, though thousands of miles apart, are tied together with an invisible red thread by an old man under the moonlight.

　　千里姻缘一线牵。

　　8.As decreed by providence you have met him; otherwise you might have failed although you traveled a long way.

　　有缘千里来相会，无缘对面不相逢。

　　9.It is a pity that we have no opportunity to meet each other.

　　真遗憾,我们一直无缘相见。

　　10. As luck would have it, I found a job.

　　机缘凑巧，我找到一份工作。

　　11.The are attracted to each other but are not fated to be conjugally tied.

　　他们俩有情无缘。

　　12. Smoking and drinking don't appeal to me.

　　我与烟酒无缘。