mine-sweeping helicopter 扫雷直升机
haha mine-sweeping helicopter 扫雷直升机
sweeping helicopter
全面的直升机
以上为机器翻译结果，长、整句建议使用 人工翻译 。
There's a standard set of stories about Niagara, recounted in tourist guidebooks and scholarly tomes, and trotted out every few years in an educational documentary that begins and ends with sweeping helicopter shots of falling water.
NPR: Excerpt: 'Inventing Niagara'
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