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

特朗普总统和金正恩关系一直反复无常。

That visit marked the start of a courtship.

那次访问大向中国示好一个开始。

Anna, the dance just shows the courtship tradition.

安娜，这个舞蹈只展示求爱传统。

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

但我们按规矩来话，做不到。

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动物在求偶过程中表现一系列行为。

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

它们交配很短暂，不浪费一分钟。

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.

这种特殊求偶表演叫做 lek，一个古老北欧词，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求爱必不可少部分。

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

雷克斯霸王龙求偶舞蹈很值得一看。

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

其实这些昆虫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孩子，但求爱可能件很粗野事情。

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

求贤之旅仍在继续，斯卡利摆出一副“你很难聘请到我，但并不完全没有可能”姿态。

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

但在我们脚边，这第一片恐龙求偶实体证据。

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

它们用复求爱仪式来吸引雌性，在领地行为上有着严密范围。

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

但蝙蝠求偶行为很难研究，因为很难发现它们。

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

这这种独特求偶行为，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.

天堂鸟有一种求偶表演，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.

这看起来就像一支求爱之舞，但它更像一场地盘争夺战。