However, if the planet is in a good position, astronomers look for three key things: water, air and rock.
然而如果这颗行星处于很好的位置，天文学家会寻找三样关键的东西：水、空气和岩石。
These three commands have equivalent effect. The first specifies that the first key's start position ignores leading blanks and the second key is sorted numerically.
帮助文档对这个例子的解释明确告诉咱们：这三个命令是等价的，第一个指定域忽略前导空白，第二个指定域按数值排序；
Some people just learn faster, you know within the first two or three years they grow very fast, becoming a very key position in the company.
有些人学习很快，在2到3年的时间里他们很快的成长，在公司的关键部门任职。
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