当第一片雪花飘落时，孩子们在窗边欢呼雀跃。
The children exulted at the window when the first snowflakes began to fall.
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解释
欢呼雀跃（因惊喜而狂喜）
The children exulted at the window when the first snowflakes began to fall.
欢呼雀跃（因惊喜而狂喜）