The recording was last heard of sometime in the 1920s, when Morse played it for his grandchildren on the same treadle-operated Graphophone.
录音最后一次播放就是在那个时候，由莫尔斯在同一个脚踏式留声机上放给孙子们听。
Aunt Sarah would play the old treadle organ and Uncle Harry and my Cousins would sing.
萨拉伯母弹着旧式的脚踏风琴，哈里大伯和我的堂兄弟们伴唱。
So they are using their treadle pumps again.
所以他们重新使用踏板抽水机。
Men with treadle pumps often no longer have to leave the farm to seek extra work in cities.
有踏板水泵的男人也不用再离开农田去城市寻找额外的收入。
The treadle pump is easy to build from bamboo or other wood and two metal cylinders with pistons.
这种踏板式水泵可以轻松用竹子获其他木头和两个带活塞的汽缸做成。
In the long-jump competition, the athlete's fast and accurate treadle-jump relates to the success of the competition and the good use of the sports skills.
在跳远比赛中运动员能否快速、准确地踏板起跳，关系到技术的发挥和比赛的成败。
A Bellows operated by an assistant or by a foot treadle provided the forced draft for raising the temperature of the fire. Later, a waterwheel or animal power was often used to operate the Bellows.
用手动或脚踏风箱供给强制气流，以提高火焰温度，后来用水轮机或兽力带动风箱。
A Bellows operated by an assistant or by a foot treadle provided the forced draft for raising the temperature of the fire. Later, a waterwheel or animal power was often used to operate the Bellows.
用手动或脚踏风箱供给强制气流，以提高火焰温度，后来用水轮机或兽力带动风箱。
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