慢速英语:美国宇航局将发射最新的火星探测器以寻找生命迹象

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mission – n. an important task, usually involving travel somewhere

microbial – adj. relating to microbes (very small living things)

data – n. information, especially facts or numbers

drill– v. to make holes in hard materials with a machine

sample – n. a small amount of something to represent what the rest is or should be like

baking – n. making something hot by heating it

crater – n. a big hole

equator – n. an imaginary line drawn around the middle of a planet

potential – adj. having or showing the capacity to become or develop into something in the future

convert – v. to cause to change in form