Workers lowered these airtight wooden boxes into the river, where a system of pipes pumped pressurized air in and water out.
工人们将这些密封的木箱放入河中,管道系统将加压空气泵入并抽出水。
| 单词 | lower box |
| 例句 |
原声例句
TED-Ed(视频版) Workers lowered these airtight wooden boxes into the river, where a system of pipes pumped pressurized air in and water out. 工人们将这些密封的木箱放入河中,管道系统将加压空气泵入并抽出水。 |
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