通常，他们在日落后三到四个小时里仍然清醒着，而且除了用以驱赶野生动物并在冬天聊以取暖的微弱火光之外，他们别无其他光源。
Usually they stayed awake three to four hours past sunset, with no light exposure other than the faint glow of a small fire that would keep animals away and provide a bit of warmth in the winter.
加拿大总体排名第三，但在力量上排名第26，落后于古巴和布隆迪等国。
Canada ranked third overall but 26th in power, behind countries such as Cuba and Burundi.
一周以前，我们计划向领导报告，他的团队落后了，并需要两到三个月以完成剩余的工作。
The week before we were scheduled to deliver one manager said his team was behind and needed two more months to get their work done.
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