rungs

常见例句

• Dots on the three lowest rungs would indicate that the system possesses no internal energy.
  圆点在三个最低梯级上，就表示这个系统没有内能。
• Just use the rungs and sides of the ladder as support for the vines.Let the pumpkins grow on the steps for further support.
  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。
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