a manmade spacecraft 人造航天器
While most meteorites are natural in origin, on occasion manmade space debris can reenter the atmosphere and also become a meteor or even a meteorite!
尽管大多数陨石都是天然形成的,但也有少数人造天体会落入大气层,变成流星,甚至是“陨石”!
In these situations, you have to be more cautious about concluding a feature is manmade oil.
在这种情况下,你必须更加谨慎地来判断某些特征是否是人造石油的。
But now because of a manmade catastrophe - one that's not their fault and that's beyond their control - their lives have been thrown into turmoil.
但现在由于一起人为的灾难——而且还不是他们自己的错,也不由他们控制——他们的生活就乱了套了。
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