地球的力量

This is a giant meteorite crater.
这是个巨大的陨石坑
It was blasted out of the Earth's crust 50,000 years ago.
五万年前与地球地壳相撞形成的
Well, there it is, Meteor Crater.
就是它了，陨石坑

This place really gives you a sense of the destructive power of incoming meteorites.
这个地方让你明白 小行星的破坏力
The blast here would have vaporised a city larger than London.
这里的爆炸可以毁灭一个比伦敦还大的城市
But the lump of rock that did it measured almost 80 feet across.
但是造成这个破坏的岩石直径还不到30米
The impact exploded with a force 70 times greater than the atom bomb.
这次冲击爆炸力要比原子弹强70倍
But what makes this massive crater so significant
但是这个巨大的坑之所以意义深刻
isn't how big it is, but how rare it is.
并不是因为它多大而是因为它多么少见
Because although it might not look like it, space is a hazardous place.
也许看起来不像但是太空是个很危险的地方
There are millions of objects that cross Earth's path at thousands of miles per hour.
几百万的物体都朝地球来 每小时几千公里的速度呼啸飞来
With so much debris up in space, Earth should be hit much more often.
在太空有这么多的碎片地球应该经常被击中才对
Other craters do exist but they're few and far between.
虽然有其他的陨石坑但它们却寥寥可数
This one is in Namibia.
这个就是在纳米比亚

重点讲解

1、measure
衡量；估量;评估;判定
I continued to measure his progress against the charts in the doctor's office.
我继续比照医生办公室里的图表来判断他病情的发展。
A grammar school's success was measured in terms of the number of pupils who got into university.
一所文法学校成功与否是以考上大学的学生人数为衡量依据的。
测量;度量;计量
Measure the length and width of the gap.
测量一下这条缝隙的长与宽。
He measured the speed at which ultrasonic waves travel along the bone.
他测出了超声波穿过骨头的速度。
相当数量;一定程度
With the exception of Juan, each attained a measure of success.
除了胡安之外，每个人都获得了相当大的成功。
The colonies were claiming a larger measure of self-government.
殖民地正要求获得更大程度上的自治。
2、significant
数量相当大的;显著的
A small but significant number of 11-year-olds are illiterate.
数量不多但仍有相当一部分 11 岁孩子是文盲。
foods that offer a significant amount of protein.
富含蛋白质的食物
重要的;有意义的
Time would appear to be the significant factor in this whole drama.
时间似乎是整部剧中一个举足轻重的因素。
a very significant piece of legislation.
一条非常重要的法规
别有含义的;意味深远的
Mrs Bycraft gave Rose a significant glance.
拜克拉夫特夫人意味深长地瞥了罗丝一眼。