The earliest computers were manual counting devices, like the abacus, while later ones used mechanical parts.

最早的计算机是手动计数设备，如算盘，而后来的计算机则使用机械零件。

He sat in the driver's seat half the night, with the boy on his lap, explaining how all the mechanical parts were connected.

他坐在前座上，向坐在腿上的小家伙讲解着机械原理，直到深夜。

A freight train loaded with electronic products, mechanical parts and daily necessities departed from Southwest China's Chongqing municipality on June 23 and arrived in Duisburg, Germany on Monday.

一列满载着电子产品、机械零件、日用百货等货物并于 6 月 23 日从重庆出发的中欧班列（重庆），于周一抵达德国杜伊斯堡。

" Clockwork" describes the inside of a clock or watch, the mechanical parts of a clock or watch, especially the old fashioned clocks that still had the mechanical parts to them.

“发条” 描述了钟表的内部，钟表的机械部分， 尤其是那些仍然有机械部分的老式钟表。