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乌龟乐乐与小兔佳佳又开始赛跑啦,这次赛跑可新鲜了,瞧,他们订了新规则:两人站在600米的环形跑道上,在同一地点相背而行,如下图。
Turtle Lele and Bunny Allison started racing again, and the race was fresh. Look, they set a new rule: they both stand on a 600-meter circular runway and run in the same spot, as shown below.