For instance, a research group here at Arizona State University recently claimed their developmental small CubeSats could cost as little as $3,000 to put in orbit.
例如,亚利桑那州立大学的一个研究小组最近称,只需3000美元就能把他们开发的小型立方体卫星送入轨道。
For instance, a research group here at Arizona State University recently claimed their developmental small Cube Sats could cost as little as $3,000 to put in orbit.
例如,亚利桑那州立大学的一个研究小组最近声称,他们开发的小型立方体卫星进入轨道的成本可能只有3000美元。
"Only a small percentage of alien species cause problems in their new habitats," said Don Smith, professor of ecology and evolutionary biology at the University of Tennessee.
田纳西大学生态学和进化生物学教授唐·史密斯说:“只有一小部分外来物种会在新栖息地引发问题。”
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