每日背誦第五期54

所屬教程:每日背誦第五期

瀏覽:

手機版

掃描二維碼方便學習和分享

00:00

MP3下載

　
In the 20th century, machines are run mostly by electricity. Two hundred years ago electricity was not in common use. Machines were often run by water, and therefore many factories grew up by running rivers. Today, however, factories can be placed far from our rivers.

在20世紀，機器大都是電動的。兩百年前，電還沒有廣泛的應(yīng)用，機器都是靠水力發(fā)動，因此，工廠都是開在流動的江河邊。然而，現(xiàn)今的工廠可以開在遠離河流的地方。

下載本課mp3 查看全部《每日背誦第五期》

上一篇:
每日背誦第五期53

下一篇:
每日背誦第五期55

[報錯與提意見]