The frog hop-hop-hopped through the grass and knocked on the heavy door of the castle.
青蛙跳啊跳，跳过草地，敲了敲城堡厚重的门。
When a turnout is connected with CWR through welded joints, the longitudinal rail temperature force ACTS directly on the frog and the switch section along with the variation of rail temperature.
道岔与无缝线路焊接后，随着轨温的变化，长钢轨纵向温度力将直接作用于道岔的撤叉和转撤部分。
A frog (sometimes referred to as a Chinese frog) is an ornamental braiding for fastening the front of a garment that consists of a button and a loop through which it passes.
盘扣是一种装饰性的编织状扣子，用来扣住一件衣服的前襟。
A frog (sometimes referred to as a Chinese frog) is an ornamental braiding for fastening the front of a garment that consists of a button and a loop through which it passes.
盘扣是一种装饰性的编织状扣子，用来扣住一件衣服的前襟。
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