基本解釋梯級同根派生 rungs相關(guān)詞英漢例句Dots on the three lowest rungs would indicate that the system possesses no internal energy.圓點在三個最低梯級上，就表示這個系統(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)麪作爲藤蔓的支撐物，讓南瓜在梯級上生長，獲得支撐。rungs更多例句