set up the war whoop

When he got to where they were, he began unfolding his secret, and they listened moodily till at last they saw the" point "he was driving at, and then they set up a war-whoop of applause and said it was" splendid!"

他走到他们跟前，就把那个秘密向他们亮了出来。他们起初闷闷不乐地听着，等到明白了他的“真正意图”时，便欢呼雀跃起来，连呼“太妙了！”

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