boulder rock

基本解释

The boulder, rock wall. bottom toe always appear in limestone mine mid deep bench blasting because of bedding, fault, joint and cave.
石灰石鑛巖層較多，斷層、節理裂隙和溶洞發育，爆破容易産生大塊、巖牆和根底。
An subregional evaluation is made on destruction fatalness and destructiveness of mountain slope dangerous rock mass and boulder stone.
對山坡危巖躰及孤石破壞類型的危險性和危害程度分區段進行評價；
Focal points can take many forms in landscapes and could range from a building or structure, a striking tree, a boulder or rock formation, a silhouette etc.
在風景攝影中，焦點可以以很多種形式出現，比如建築物，樹枝，一塊石頭或者巖層，一個輪廓等等。