二十五万多流离失所的人需要紧急救助。
More than a quarter of a million displaced people need immediate help.
如果我多知道一点急救知识，我就能帮助他们了。
要是我多懂得一些急救知识，我就能帮助他们了。
要是我多懂得一些急救知识，我就能帮助他们了。
If I had known more about first aid, I would have helped them.
要是我多懂得一些急救知识，我就能帮助他们了。
If I had known more about first aid, I would have helped them.
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