Sunlight-Powered Spacecraft Set to Launch Aboard SpaceX Rocket
日期:2019-06-10
Words in This Story
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cosmos – v. the whole universe
advance – v. develop or progress
momentum – n. the force that something has when it is moving
reflect – v. send back or bounce off
paper clip – n. small piece of metal used to hold pieces of paper together
thrust – n. upward push or force
navigate – v. find the right direction to travel by using maps or other equipment
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