• The pistons go up and down as a person stands on lever devices treadles and uses a natural walking motion.

    VOA: special.2009.08.17

  • There,on Easter morning, people walk up and down Fifth Avenue after church services to enjoy the spring weather.

    VOA: special.2009.12.20

  • They sailed up and down the Atlantic Coast and stole anything of value from other ships.

    VOA: special.2011.07.26

  • Then he got up, found a long stick and walked up and down the river bank.

    VOA: special.2010.06.26

  • From a cave room you can see far up and down the canyon and imagine what life was like there seven hundred years ago.

    VOA: special.2010.07.05

  • We continue on our trip, driving on a winding road up and down the Black Mountains.

    VOA: special.2010.08.23

  • I keep my mind active and coming to school three times a week, and walking up and down the steps, that kept me physically able."

    VOA: special.2010.07.16

  • Electromagnetic energy travels almost like an ocean wave - up and down,up and down.

    VOA: special.2010.12.08

  • A big, heavy man was walking up and down in the hotel lobby.

    VOA: special.2009.01.17

  • It makes them jump up and down, and sing it with you.

    VOA: special.2010.06.13

  • A big,heavy man was walking up and down in the hotel lobby.

    VOA: special.2010.06.12

  • Mist can take you on a boat ride up and down the river so you can see the animals as they come to drink or play in the water.

    VOA: special.2009.08.19

  • Ad sales have always gone up and down with the economy.

    VOA: special.2009.03.21

  • Voyager's long wings moved up and down as the winds changed.

    VOA: special.2010.10.06

- 来自原声例句

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进来说说原因吧 确定