Light thinks it travels faster than anything, but it is wrong.
光总是认为它比任何东西都快,但它错了。
Well. Eight-tonne capacity truck crane must be preferred. It travels faster.
那么,八吨级的汽车起重机较好,它跑的快些。
Once in space, ion engines steadily propel a spacecraft until it travels faster than it would have using a chemical rocket.
一旦进入太空,离子发动机将稳步推进航天器,最终达到的速度会比使用普通火箭的更高。
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