to the right

1. People are more likely to tilt their heads to the right when kissing instead of the left (65 percent of people go to the right!).
人們在接吻的時候更喜歡把頭歪向右邊而非左邊（65%的人都歪向右邊?。?/div>

love song

2. The oldest known love song was written 4,000 years ago and comes from an area between the Tigris and Euphrates Rivers.
最古老的情歌誕生于4000多年前，在底格里斯河與幼發(fā)拉底河之間的兩河流域。（記得周董的《愛在西元前》嗎……）

involved

3.One in five long-term love relationships began with one or both partners being involved with others.
在關(guān)系持久的戀人中，五分之一的人一方或雙方在進(jìn)入這段戀情之初是作為第三者。

calming effect

4. Falling in love can induce a calming effect on the body and mind and raises levels of nerve growth factor for about a year, which helps to restore the nervous system and improves the lover’s memory.
當(dāng)你墜入愛河時，你的身體和精神都會產(chǎn)生一種鎮(zhèn)定作用，神經(jīng)生長因子值也會上升，從而你的神經(jīng)系統(tǒng)將得以改善，記憶力也會增強(qiáng)。

stress

5. Love can also exert the same stress on your body as deep fear. You see the same physiological responses—pupil dilation, sweaty palms, and increased heart rate.
愛情會讓你體驗(yàn)到一種與深度恐懼一樣的壓迫感。你會產(chǎn)生與恐懼一樣的生理學(xué)反應(yīng)——瞳孔放大、手掌出汗、心跳加速。

airport

6. Philadelphia International Airport finished as the No. 1 best airport for making a love connection, according to a recent survey.
根據(jù)最新調(diào)查顯示，費(fèi)城國際機(jī)場是勾搭到另一半的頭號寶地。

kiss wives

7. Men who kiss their wives in the morning live five years longer than those who don’t.
早晨會吻自己妻子的男人比不這樣做的男人壽命要長五年。

diamond

8.The tradition of the diamond engagement ring comes from Archduke Maximillian of Austria who, in the 15th century, gave a diamond ring to his fiancée, Mary of Burgundy.
訂婚送鉆石戒指的儀式傳統(tǒng)發(fā)起自奧地利大公馬克西米利安。早在15世紀(jì)，他將一枚鉆石戒指奉送給了自己的未婚妻，勃艮第瑪麗。這是世界上第一枚訂婚戒指。

hormone serotonin

9.People who are newly in love produce decreased levels of the hormone serotonin —as low as levels seen in people with obsessive-compulsive disorder. Perhaps that’s why it’s so easy to feel obsessed when you’re smitten.
剛剛墜入愛河的時候，人的荷爾蒙血清素值會降低，低到近乎強(qiáng)迫癥患者的血清素值。大概這就是為什么人們在一見鐘情之際都感到特別沉迷其中。

mathematical theory

10. According to mathematical theory, we should date a dozen people before choosing a long-term partner; that provides the best chance that you’ll make a love match.
根據(jù)數(shù)學(xué)原理，我們在找到一位關(guān)系固定的伴侶之前，可能會遇到大約十幾個曖昧對象。你可以根據(jù)這一原理確定你將何時遇到真正的另一半。