1. Signs across the entrances warn all visitors to stub out their cigarettes. 入口处的标牌告诫所有参观者要掐灭他们的香烟。
2. It is divided into three parts of the same length by three entrances with a lawn in the center. 它被三个入口分成三个长度相同的部分，中间有一片草坪。
3. If water levels fall in summer, as they do in most of North America, then beavers lodge entrances may be exposed. 如果夏季水位下降，就像在北美大部分地区所发生的那样，那么海狸居所入口可能会暴露。
4. If water levels fall in summer, as they do in most of North America, then beavers' lodge entrances may be exposed. 如果像北美大部分地区一样夏季水位下降，那么海狸的小屋入口就会暴露出来。
5. Neighbors called the fire department, then stood helplessly by, unable to enter the house because flames blocked all the entrances. 邻居们打电话给消防队，然后无助地站在旁边，无法进入房子，因为火焰堵住了所有的入口。
