Sonic booms created by vehicles the size and mass of the space shuttle are very distinguishable and two distinct booms are easily heard.
体型和质量相当于航天飞机的飞行器制造的两个音爆则非常容易区分,人们经常很容易地听到两次响声。
The Shuttle Puzzle of size 3 consists of 3 white marbles, 3 black marbles, and a strip of wood with 7 holes.
大小为3的棋盘游戏里有3个白色棋子,3个黑色棋子,和一个有7个格子一线排开的木盒子。
There wasn't room for it aboard Discovery, given Kibo's size, and so the last shuttle visitors left behind their boom.
由于Kibo体积太大没有足够空间放太空手臂从而上一次宇的航员把它留在了空间站上。
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