We cannot emphasize the importance of protecting the environment too much because we have only one Earth.

再怎么强调保护环境的重要性也不为过，因为我们只有一个地球。

youdao

We only have one earth, so we need to take care of her.

我们只有一个地球，所以我们必须要照顾好她。

youdao

Boss said it is possible, even likely, that most stars have at least one earth like planet, which he considers surprising.

博斯说，大多数恒星都有可能，甚至很有可能，至少有一颗类似地球的行星，他认为这是令人惊讶的。

youdao

The atmosphere is about twenty-percent oxygen and eighty percent nitrogen from Earth's surface to where space begins at one-hundred-twenty kilometers up.

VOA: special.2011.04.06

But the servant who had been given only one talent hid the talent in the earth so as -- perfectly understandably ] - so as not to risk the only talent that he had been given.

但只得到一枚金币的仆人,把他的金币藏了起来--这可以理解,-为了不使这个他仅有的,金币丢了。

耶鲁公开课 - 弥尔顿课程节选

The one theory made some investigations of earth spores, hoping to find-- what do you call that stuff that floats around and makes you sneeze? Pollen.

有种学说对于,土地孢子进行了调查,期待发现,通过植物种子的变化推定气候状况的方法

耶鲁公开课 - 古希腊历史简介课程节选

But, based on the limited numbers of planets found so far, Dr Boss has estimated that each Sun-like star has on average one "Earth-like" planet.

BBC: Galaxy has 'billions of Earths'

Now only visible with the largest ground-based telescopes or from space, 1999 RQ36 currently lies about one earth-sun distance away.

FORBES: New Observations Signal NASA Mission's Target Asteroid Is Sample-Friendly Rubble Pile

On the moon, we had one-sixth of Earth's gravity, allowing Neil and me to move around easily in the Eagle to put on equipment for our walk.

WSJ: Buzz Aldrin on His Lunar Home, the Eagle