rungs

常見例句

• Dots on the three lowest rungs would indicate that the system possesses no internal energy.
  圓點(diǎn)在三個(gè)最低梯級上，就表示這個(gè)系統(tǒng)沒有內(nèi)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.
  就用梯級或梯子的側(cè)麪作爲(wèi)藤蔓的支撐物，讓南瓜在梯級上生長，獲得支撐。
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