北美洲

But North America, with far fewer countries in its fold, has also been quite insular.

但北美洲，国家少得多，在其5倍，也比较狭隘。

Large scaup of North America having a greenish iridescence on the head of the male.

北美洲的大型斑背潜鸭，雄性的羽冠为偏绿的五彩色。

In North America, it is important to look into the eyes of the person you are talking to.

在北美洲，看著和你说话的人的眼睛是很重要的。

A continent in the western hemisphere connected to North America by the Isthmus of Panama.

位于西半球的一个大洲，通过巴拿马地峡与北美洲相连。

At Jamestown, in 1607, the English made their first successful settlement in North America.

1607年，英国人在詹姆斯敦建立了他们在北美洲的第一个有成就的殖民地。

Jeez, that is something I had never experienced back in North America.

天啊，那是我之前在北美洲从没有体验过的事。

Common North American junco having gray plumage and eyes with dark brown irises .

北美洲常见的雀，灰色羽毛，眼睛为深褐色。

Common North American junco having gray plumage and eyes with dark brown irises.

北美洲常见的灯芯草雀，灰色羽毛，眼睛为深褐色。

A recent study published in the journal Nature has found that spotted knapweed, which was introduced to North America through imported alfalfa seeds more than a century ago, has likely been able to spread so profusely, not because it lacked insect enemies, but because it lacked microscopic soil enemies.

在《自然》杂志上发表的一项近来的研究发现，斑点矢车菊一世纪以前随着苜蓿种子的进口进入北美洲，随后四处扩散的原因并不是缺少昆虫天敌，而是缺少微小的土壤敌人。

The spott ed knapweed is an intruder from eastern Europe that over the past century has displac ed indigenous grasses and degrad ed pastures in North America.

斑点矢车菊这种来自东欧的侵略者，在过去一个世纪中已取代北美洲的原生野草，并危害到牧草的生长。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。