他们横穿过大沙漠。
云朵横穿过天空，时而来自不同的方向，时而遮蔽了星光熠熠的蓝色幕布，有时他们移到恒星的前面，忽厚忽薄的云使得星星一闪一闪的发亮。
Dark clouds flow across the sky, sometimes from different directions, sometimes blocking background starlight, but other times causing stars to appear to flare as they move in front.
这样的一位观众往往是自己决定要横穿过跑道，然后拦在赛跑员的前面，以缠住他们，好让他们全部能够有片刻休息的时间。
Sometimes, it's a spectator who decides to cross the street right in front of runners, making them all stop short and maneuver around them.
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