1·Empty paddle boats await rowers at the main cave entrance at Puerto Princesa Subterranean River National Park in the Philippines.
菲律宾的公主港地下河国家公园的主洞入口处，停靠着几只空空的桨船，在等待桨手的到来。
2·Pictured in October, the foreboding entrance to Mortimer's Hole (bottom center), another cave passage beneath Nottingham Castle, beckons downhill from the palace itself.
照片摄于十月份，这是通向莫蒂默洞穴的正面入口(图片下方中部)，诺丁汉城堡的另一个地下洞穴通道，从宫殿向下延伸。
3·He mounted his horse, and when he came to the cave he alighted, tied his horse to a tree, then approaching the entrance, and pronouncing the words, "Open, Sesame!"
他骑上马，当他来到这个他偶遇的山洞，把马绑在树上，然后接近入口，念起咒语，“打开，芝麻！”
4·It's usually an underwater cave, protected by rocks that she's put at the entrance to keep hungry crabs, sea stars and fish from getting too close.
通常它是一个水下洞穴，被那些她放在入口处来阻挡饥饿螃蟹进入的石块保护着。
5·A massive boulder blocked the entrance of the cave.
一块巨大的圆石堵住了山洞的入口。
6·The giant rolled a huge rock in front of the entrance of the cave.
那个巨人滚一块巨石到洞穴的入口。
7·Skûmfil is a large circular cave with paths leading left and right from the entrance.
斯古费尔是一个圆形洞穴，入口处有通向左右两边的通道。
8·A natural opening, as the part of a stream or river that empties into a larger body of water or the entrance to a harbor, canyon, valley, or cave.
河口一个自然形成的开口，作为溪流或河水的一部分，可通过此口流入更大的水域或港湾、峪或洞的入口。
9·A door curtain hanging in the entrance way showed that the cave was undoubtedly occupied by workers.
石洞门口还挂着布帘子。 无疑，这里住着工人。 我抓住树枝爬上去。
10·The entrance to the cave is overhung with trailing plants.
山涧的入口处垂拄着蔓延的植物。