Normal swells, known technically as gravity waves, are created by wind pushing the surface of the sea up and gravity then pulling it down, causing it to bounce.

一般的波浪，技术上被成为重力波，是由于风推动着海洋表面上升而后又在重力的作用下被拉向下方，这便会导致海水的回弹。

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My fingers were digging in the rich soil, pulling up the plants and brushing off the dirt to return to the cycle of life and death in my garden.

我的手指在肥沃的土壤里挖掘，拔出菜，去掉上面的泥土，在菜园中回到生死循环之中。

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As a result, wheat prices elsewhere more than doubled, pulling rice and com prices up with them.

结果，其他地区的小麦价格上涨了一倍多，拉动了大米和玉米的价格随之上涨。

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Vice President Dick Cheney, after accepting his party's renomination, gave a nod to the pulling-up-by-the-bootstraps topic when he mentioned that his grandparents had lived in a railroad car.

CNN: Cheney, accepting party's nod, hails Bush's actions

Drilling holes every few dozen yards and pulling up pipe-shaped samples still leaves acres of mystery.

WSJ: In Geology, Old-Timers Can Be Worth Their Weight in Gold

The bus was in collision with a sedan car and a pick-up truck pulling a trailer, Mr Lopez said.

BBC: California bus crash kills eight and injures dozens