It's over a hundred metres below the level of the sea.

它的地势低于海平面100多米。

The landing was extremely dangerous. The daily change in the level of the sea was as much as nine meters.

着陆险象环生，海平面日变化高达9米。

The road here attained the highest elevation of the journey, eight thousand and ninety–two feet above the level of the sea.

这个地区是整个铁路线标高的顶点，海拔达八千零九十二英尺。

" By my observation we are at 10,000 feet below the level of the sea."

“根据我的观察，我们位于海平面以下 10,000 英尺处。”

It is in the heart of the High Sierra east of Yosemite, 8500 to 9000 feet above the level of the sea.

它位于优胜美地以东高山脉的中心地带，海拔8500至9000英尺。

Before the volcanoes broke out it consisted of trap rocks slowly upraised to the level of the sea by the action of central forces.

在火山爆发之前， 它由圈闭岩石组成， 在中心力的作用下慢慢上升到海平面。

And in truth this instrument would become useless as soon as the weight of the atmosphere should exceed the pressure ascertained at the level of the sea.

事实上，一旦大气的重量超过了海平面上确定的压力，这个仪器就会变得毫无用处。

It was growing on the edge of Lake Hollow, north of Mount Hoffman, at an elevation of 9250 feet above the level of the sea, and was probably about a hundred feet in height.

它生长在霍夫曼山以北的霍洛湖边缘， 海拔高度为 9250 英尺， 大概有一百英尺高。

And this is the real conundrum, because the very presence of a mountain (continent on which it sits) changes the level of the sea: the gravitational attraction of land pulls more water nearby, raising the sea around it.

这才是真正的难题，因为一座山（它所在的大陆）的存在改变了海平面：陆地上的万有引力吸引附近更多的水，使周围海面更高。

From the foothills to a mile above the level of the sea nothing can stir without their knowledge; and alarms are spread in an incredibly short time, without any howl or cry that we can hear.

从山麓到海平面以上一英里，没有他们的知识，任何事情都不会发生。警报在极短的时间内传播开来，我们听不到任何嚎叫或叫喊声。

The very largest specimen I ever found was nineteen feet seven inches in circumference four feet from the ground, growing on the edge of Lake Hollow, at an elevation of 9250 feet above the level of the sea.

我发现的最大的标本距地面 4 英尺，周长 19 英尺 7 英寸，生长在海拔 9250 英尺的空心湖边缘。

The two spermophiles are astonishingly abundant in the lowlands and lower foot-hills, but more and more sparingly distributed up through the Douglas domains, -seldom venturing higher than six or seven thousand feet above the level of the sea.

这两种嗜精菌在低地和低山脚下的数量惊人地丰富， 但越来越少地分布在道格拉斯地区——很少冒险到海拔六七千英尺以上的地方。

At an elevation of 6000 feet above the level of the sea the silver firs are 200 feet high, with branches whorled around the colossal shafts in regular order, and every branch beautifully pinnate like a fern frond.

在海拔 6000 英尺的地方，银杉有 200 英尺高，树枝有规律地围绕巨大的树干旋转，每根树枝都像蕨叶一样美丽地呈羽状。