The rocket reached the desired altitude during its first test in 2009.

该火箭在2009的第一次测试中达了预期高度。

As altitude increases, atmospheric pressure decreases.

随着海拔的升高，大气压降低。

Under the right conditions, experienced pilots can reach very high altitudes and stay aloft for hours.

在正常情况下，资深行员能够将机高的高度，并能够持续行几小时。

But staying at that altitude will be tough.

但要继续站在这个高峰困难重重。

And if it's under 1,200 in altitude?

那如果低1200米海拔种植呢？

The camp is at an altitude of 7,790 meters.

该营地位海拔7790米处。

Drones are also entering weather prediction arena, the meteo drones can reach out altitudes of 2.5 kilometers.

无人驾驶机也将被投入天气预测行业。气象无人机可以2.5公里的高度。

The takeoff was accomplished, and they started gaining altitude.

起完成了，他们开始继续升高。

The oldest camps only reached altitudes of about 2,500 meters.

最古老的营地海拔达了2500米。

CNN has confirmed, the plane made erratic changes in altitude.

CNN已确认, 机所做出的高度不稳定的变化。

And cell phone calls from cruising altitude may be next.

而在行高度打电话可能是下一个。

It goes from 500 meter altitude to 2,300 meters altitude, so the finish is close to a glacier.

山地马拉松比赛要从海拔500米的地方跑海拔2300米的地方，终点离冰川近。

Interestingly, their size and shape will vary with altitude and temperature.

有趣的是，它们的大小和形状会随着海拔和温度的变化而变化。

As the altitude rises the highlands offer a cool haven.

随着海拔升高，这片高地提供了凉爽的栖息地。

That's when people's bodies tend to succumb to altitude sickness.

这时人们的身体往往会屈服高山症。

He says it shows the plane dropping then briefly regaining altitude.

他表示，结果表明失事客机在下降后曾恢复高度。

Which of these cloud types is typically found at the highest altitude?

这些云类型中哪个通常是在最高海拔处被发现的？

One of the only kind of animals living in this high altitude.

这是该地唯一一种生活在这种高海拔地区的动物。

It hits a top altitude of around 70,000 feet,forcing pilots to wear a spacesuit.

它要70,000英尺的高度，使得行员必须穿上航天服。

They can reportedly detect small targets, conventional or stealth, at low and medium altitudes with high precision and resolution.

据报道，它们可以探测中低空常规或隐形的小目标，具有高精度和高分辨率。