要观察到更多种鸟儿，你可能需要长途跋涉，走过崎岖不平的难走的地势，还要背负装着观鸟指南、双筒望远镜、单筒望远镜和其他器材的野营包。
Observing many different species of birds may require long hikes and walks over uneven and challenging terrain while carrying a field bag with guides, binoculars, scopes and other equipment.
观察情况确认安全情况下，可使用消防电梯将灭火器材送到出事楼层，然后将消防电梯送回一层，供消防队其他人使用。
After confirming security, then they can use fire elevator to send extinguisher to accidental floor. Then send the fire elevator to the first floor so that it can be used by others.
观察情况确认安全情况下，可使用消防电梯将灭火器材送到出事楼层，然后将消防电梯送回一层，供消防队其他人使用。
After confirming security, then they can use fire elevator to send extinguisher to accidental floor. Then send the fire elevator to the first floor so that it can be used by others.
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