1.
Mercury is covered in craters - hollows made by huge space rocks crashing into it.
水星的表面有许多陨石坑，这些坑是由巨大的太空岩石撞击而成的。
2.
Barringer crater is 1.2km in diameter.
巴林杰陨石坑的直径有1.2千米。
3.
It is about7000 million years old measured by isotope geological method.
假如该坑与上述三个陨石坑是同一系列的外来天体撞击地球事件。
4.
When he emerged at the quarry he felt secure, and so he picked up his nimble heels and flew.
到了石坑那边，他觉得安全了，拔腿就跑，一路飞奔。
5.
Fill in sunken places with stones
用石块填平坑坑洼洼
6.
This rough track will soon is a metalled road.
这条坑坑 的路不久就要铺上碎石了.
7.
"Yes. Those found under water are the subdued color of butter, those from ravines are vivid, and those dug from the ground are transparent. These last are deemed the best."
对。水坑石呈灰黄色;山坑石呈多种不同色彩;田坑石鲜艳透明，被认为是最佳石料。
8.
Species Diversity of Karst Tiankeng Forest in Dashiwei Tiankengs，Guangxi;
广西大石围天坑群天坑森林物种多样性研究
9.
A small body or accumulation of ore.
矿坑小矿体或矿石的堆积
10.
They filled in sunken places with stones.
他们用石头把坑洼不平的地方填平。
11.
An excavation in the earth from which ore or minerals can be extracted.
矿，矿井采掘矿石或矿物的地下坑道
12.
The miners wound up ore from a mine.
矿工们用绞车从矿坑中吊出矿石。
13.
More gravel is needed to fill the hollow in the drive.
需要更多的砾石来填平车道上的坑洼。
14.
The stone made a dent in the roof of my car.
我的汽车顶让石头砸了个坑.
15.
A scar on the earth's surface left from the impact of a meteorite.
陨星坑陨石对地表冲击所造成的痕迹
16.
Shishi Baokeng Shuangta Agar Precessing Factory
福建省石狮市宝坑双塔琼脂加工厂
17.
Fujian Shishi Qiankeng Agar Non-staple Food Factory
福建省石狮市前坑琼脂副食品厂
18.
A PETROLEUM-DEGRADING FRESHWATER ALGA PHORMIDIUM FOVEOLARUM GOM.
一种降解石油烃的淡水藻类——坑形席藻