one of the crosspieces that form the steps of a ladder
造句
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，就表示這個系統沒有內能。
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面作為藤蔓的支撐物，讓南瓜在梯級上生長，獲得支撐。
近義反義詞
rung
Rungia densiflora
rung the knell of
runge kutta method
Rungia yunnanensis
Rungia stolonifera
Rungia taiwanensis
Rungia axilliflora
Runge- Kutta way
Rungia guangxiensis
Rungia pinpienensis