The kick is a simultaneous thrust of the legs called a "frog" or breaststroke kick. No flutter or dolphin kicking is allowed.
蹬腿就是两条腿同时蹬出，称之为“蛙”式腿或蛙泳腿，蹬腿时采用交替式打水或海豚式都是不允许的。
One frog, one mouth, two eyes, four legs.
一只青蛙，一张嘴，两只眼睛，四条腿。
That electricity from a Leyden jar or an electric machine would cause the legs of a dead frog to move.
莱顿瓶或电器发出来的电竟使死蛙的腿动起来。
The truth must be owned that the old Frog was not only on his hind legs, but also on his last legs, when he stood up to look at Osaka;
的确，我们不得不承认，当老青蛙用两条后腿站起来想看大阪时，那两条腿已经快没力气了；
The truth must be owned that the old Frog was not only on his hind legs, but also on his last legs, when he stood up to look at Osaka;
的确，我们不得不承认，当老青蛙用两条后腿站起来想看大阪时，那两条腿已经快没力气了；
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