tier up

美 　英

• 網(wǎng)絡(luò)層層排列

例句

Villagers use every stream pouring down from the mountains to irrigate tier up tier of terraces carved into the precipitous slopes .

村民們利用每條傾瀉下山的溪流灌溉一層層仿若刻入陡峭山坡的梯田。