就用梯级或梯子的侧面作为藤蔓的支撑物，让南瓜在梯级上生长，获得支撑。
Just use the rungs and sides of the ladder as support for the vines. Let the pumpkins grow on the steps for further support.
他的行为与他的同胞音乐会观众和进化阶梯下降的两个或三个梯级。
He ACTS in concert with his fellow spectators and descends two or three rungs on the evolutionary ladder.
以黄河上游梯级水电站群为例，考虑水电站水库已备有的短期或中长期预报方案，建立其优化调度模型。
The long-term optimal operation model is established for Baishan Hydropower Plant and the model is solved with POA algorithm.
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