“dangerous rock”造句，怎麼用dangerous rock造句

The developing of dangerous rock is due to release of in-situ stress in rock, aeolation, water erosion and root flerry.

Instead, slam a spacecraft head-on into a dangerous rock to move it in a hurry, then fine-tune it with another spacecraft by using its gravity to pull the rock into a safe path.

Reported here is a typical engineering case history. The high-slope dangerous rock at Dahuangya is treated with unloading by means of coyote blasting.

Pointing down to the bottom of the cliff, Mary showed us the dangerous rocks.