从那以后他们拆掉了简陋的棚屋。They have since knocked down the shack.两间空置的棚屋里发生了火灾。The fire broke out in two unoccupied cabins.这棚屋是用附近森林里长的树木建造的.The hut was constructed from trees that grew in the nearby forest....
原子的分裂the splitting of the atom核反应堆是分裂原子的装置.A nuclear reactor is the apparatus in which atoms are split.碱金属原子的价原子具有两种能态.The valence atom of an alkali - metal atom has two states....