DREAM JOB

When I grow up I want to be a... scientist

作者：Lang Xiuqiang

投身科研，用科技改变世界。

RADARS (雷达) can spot things in the air, on the ground and at sea from a long way off. They display pictures of these things on a screen. New types of radar keep appearing. But who are the people behind these “magical” devices (设备)

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