Unless you're an avid spelunker, or a troglodyte, the answer is probably not too often.

除非你是名探索爱好者或者名居人。

We reached a beautiful grotto, whose entrance was almost hiden by the vine.

我们到达了美丽,进口几乎被藤蔓遮掩著。

Deviate Fish -These are fishable in the Barrens in Wailing Caverns.

偏离鱼，这些都是在哀嚎贫瘠之地捕捞。

The roof of the cave dropped in on the miners, trapping them.

顶部坍了下来, 砸在矿工身上。

In fact I've rarely seen such a pesthole.

事实上我以前很少见到这样害虫.

Calypso in her caves constrained his stay.

她中卡吕普索强迫他留下。

Walkways allow visitors to enter the caves in perfect safety.

步行道使游客可以十分安全地进那些。

We found some really interesting caves, but we didn't have the gear to go spelunking.

我们发现些相当有趣，但我们没有装备去进行探险。

CRONOS is well suited for local, regional, and teleseismic recording from both posthole and vault installations.

Cronos很适合安装在井孔和地下中，进行本地、区域及遥测地震记录。

Mineral deposits in Lechuguilla Cave take on fantastical forms in Carlsbad Caverns National Park, New Mexico.

矿物图片集。矿物沉淀物在墨西哥龙舌兰位于卡尔巨国家公园，新墨西哥。

We entered a dark cavern redolent with manly scents —gun oil and cigar smoke and boot polish.

我们进昏暗,里面充满了男人气味——枪油、雪茄烟味和擦靴子油味。

It may also be referred to as "draining" (when exploring drains) "urban spelunking", "urban caving", or "building hacking".

它同样也被称为“下水道探索”，“城市探险”，“建筑探险”等等。

Towering in close symmetry, these basalt columns near Fingal’s Cave form the base of the Scottish island of Staffa.

极端地球图片。高耸密切对称性，这些玄武岩园柱状物附近Fingal形式基础上苏格兰岛Staffa 。

It is also hard to explain how the Sun-god Mithra would come to be worshipped in the windowless, cave-like mithraeum.

这也很难解释太阳神密特拉如何在无窗，似太阳式举行崇拜。

Based on the U-series dating of intercalated speleothem formations, the chronology of several hominid sites in southern China has been studied.

本文对采自云南呈贡龙潭山1号和广西土博咁前晚期智人遗址动物化石和次生碳酸岩样品进行了铀系年代测定。

At least some of the mutations responsible for this loss of vision differed between the 29 populations of cavefish known to exist.

目前现存29种鱼，其眼盲亦与这些突变有关，但是其基因突变位置并不相同。