电梯停止了工作，所以即使你足够幸运没有被困在两层楼之间，你也要经历一项艰难的任务，要找到通往下几百层楼的路。
Lifts stopped working, so that even if you were lucky enough not to be trapped between two floors, you had the unpleasant task of finding your way down hundreds of flights of stairs.
清除淤泥，发现鱼类产卵的砾石层，找到合适的鲑鱼种类来重建种群是一项艰巨的任务。
Removing the mud, uncovering gravel beds where fish spawn, and finding suitable salmon types to rebuild the population is a daunting task.
BPEL文件包含实现任务层的合作伙伴服务链接。
The BPEL file contains links to partner services that implement the task layer.
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