President Trump and Kim Jong Un's courtship has been nothing if not fickle.

特朗普总统和金正恩的关系复无常。

That visit marked the start of a courtship.

那次访问是加拿大向中国示好的个开始。

Anna, the dance just shows the courtship tradition.

安娜，这个舞蹈只是展示求爱的传统。

Well, surer than the customs of well-bred courtship will allow.

但我们按规矩来的话，是做不到的。

Courtship display, or mating rituals are a set of behaviours that animals perform as part of courtship.

求偶展示或交配仪式是动物在求偶过程中表现的系列行为。

The brief courtship complete, there isn't a moment to lose.

它们的交配很短暂，不浪费分钟。

And number three, courtship behavior, we use body language.

第三点，求爱行为，我使用肢体语言。

Spotted... Serena and not-so-lonely boy. Clearly past courtship in the courtyard.

注意，Serena和不再单身的男孩，显然在庭院里平安度过了求爱期。

This spectacular courtship display is called the lek, an old north word meaning dance.

这种特殊的求偶表演叫做 lek，个古老的北欧词，意为舞蹈。

And women had to view diamonds as an integral part of courtship.

而女人必须把钻石看成是求爱必不可少的部分。

The choreography of courtship in T. Rex would have been interesting to watch.

雷克斯霸王龙求偶阶段的舞蹈很值得看。

In effect, these insects fly only long enough to complete a courtship dance.

其实这些昆虫的飞行时间仅够它们完成求偶。

He wouldn't knowingly harm her baby, but courtship can be a rough affair.

雄性座头鲸不会故意伤害她的孩子，但求爱可能是件很粗野的事情。

And so the courtship continued, with Sculley playing hard but not impossible to get.

求贤之旅仍在继续，斯卡利摆出副“你很难聘请到我，但并不是完全没有可能”的姿态。

But here at our feet, we actually have the first physical evidence of dinosaur courtship.

但在我们的脚边，这是第片恐龙求偶的实体证据。

They attract females with elaborate courtship rituals and have a sophisticated range of territorial behaviour.

它们用复的求爱仪式来吸引雌性，在领地行为上有着严密的范围。

But the bats' courtship is difficult to study because they are so hard to find.

但是蝙蝠的求偶行为很难研究，因为很难发现它们。

This is the first time this extraordinary courtship behaviour has ever been filmed in the wild.

这是这种独特的求偶行为，首次在野外被拍摄到。

Birds of paradise have a courtship display which involves performing dances and acrobatics to attract a partner.

天堂鸟有种求偶表演，包括表演舞蹈和技以吸引伴侣。

So, it kind of looks like a courtship dance, but it's really more of a territorial display.

这看起来就像支求爱之舞，但是它更像是场地盘争夺战。