常見例句

• Within the range of workable deepness from the shallon to the bottom,there existed a verticalzonation of bituminous coal from low rank to high rank.
  在由淺到深的可採(cǎi)深度範(fàn)圍內(nèi)，存在著由低級(jí)菸煤到高級(jí)菸煤搆成的垂直分帶。
返回 Shallon