瓦斯隧道装药爆破前必须进行安全检查，确保瓦斯浓度小于1%。
Before charging and blasting in gas tunnel, safety inspection must be done to ensure the gas density less than 1%.
这段28公里长的公路是四年前通过爆破风化的火成岩而成的一条通往维西的捷径。
This 28-km segment was blasted through weathered igneous rocks four years ago to provide a shorter route to the town of Weixi.
它能在爆破回到生态系统，条件得到改善前，危机来临时藏匿于泥泞中数月不进食。
It can burrow into the mud when times are hard and lie without food for months, before exploding back into the ecosystem when conditions improve. It eats almost anything that moves.
应用推荐