On Thursday October 3rd, when coming home for fall break from college, I drove around the block, only to see tree cutters and surveyors clearing out our woods.
10月3号星期四那天,我因为大学放秋假回家,开车来到那个街区附近,只见伐木机和监督员正在清除我们的树林。
A piece of rock have fall and block up the path.
一块岩石掉了下来,堵住了路。
The block which will be the first of caving rocks from free surface and lead to more caving or side-fall in underground work is known as "critical rock".
地下工程中临空面上首先冒落并引发其他岩块冒落或片帮的块体称作“危石”。
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