who're interested, (a) in improving their own Spanish- speaking skills, and (b) helping out the community.
如果他们对这个活动感兴趣,想要提高自己的西班牙语水平,同时愿意为社区尽一份力,
It's a curious sport in that... well, it started (when) surfers went to surf on land.
这是一项很有趣的运动,因为……嗯,它是从冲浪选手上陆地冲浪开始的。
Okay, which one is that? Seven o one three nine two four nine (70139249), what's...
我也一脸茫然,他们说的数字代表什么?70139249,什么意思?
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