当斑点和条纹四个月大的时候，他们正在学习如何开门和跳栅栏，我们知道是时候让他们离开了。
When Spot and Stripe were four months old, they were learning how to open doors and jump fences, and we knew it really was time for them to go.
因为它们对于甲烷和一氧化碳等致命毒气非常敏感，从栖木上掉下来的金丝雀是一个明显的信号，告诉矿工是时候离开了。
Because they were so sensitive to deadly gases such as methane and carbon monoxide, a canary dropping off its perch was a highly visible signal to the miners that it was time to leave.
他说道：“法布雷加斯的离开(转会巴萨)是一个信号，是时候离开了。”
He said: "The departure of Cesc [Fabregas] to Barcelona was a sign that it was time to go."
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