The program is used at over 100 school systems across the U.S.

该计划在美国100多个学校系统中使用。

The U.S. drugmaker Gilead sells the drug treatment under the name Sunlenca.

美国制药商吉利德销售这种以Sunlenca为名的药物。

And U.S. farmers, well, they could face fertilizer shortages.

而美国农民，他们可能面临肥料短缺的问题。

In the U.S., the months between June and September are summer.

在美国，六月到九月之间的几个月是夏天。

The retired U.S. Army veteran always takes part in the Florida Python Challenge.

这位退休的美国陆军老兵经常参加佛罗里达蟒蛇挑战赛。

Several U.S. cities and states began to recognize the day as Labor Day.

美国的几个城市和州开始将这一天定为劳动节。

And this could have a big impact on both the Canadian and U.S. economies.

这可能会对加拿大和美国的经济造成重大影响。

And they handle goods that are transported in bulk across the U.S.-Canadian border.

他们还处理跨越美加边境的大宗货物运输。

We begin in Washington D.C. where a major deadline is looming over the U.S. Congress.

首先报道的是位于华盛顿的美国国会正面临重要的最后关头。

U. S. Ambassador Linda Thomas-Greenfield agreed.

美国大使琳达·托马斯·格林菲尔德对此表示赞同。