而且我们也相信,人类对外部空间着迷已有上千年的历史了,如气象、通讯卫星都直接得益于空间研究,中考英语作文范文, and they have benefitted people all over the world. and what s more. scientific knowledge about outer space has been acquired by the mankind.用于研究的时间和金钱实在难以估计,他们指出,任何事物都具有两面性,现在,有必要进行空间探索吗,however,但收获