New words：

hint [hint]
n.提示；暗示；迹象；窍门
v.暗示；透露；示意

Sample Sentences：

What are you hinting at?
I thought she was hinting at something, but I let it go.
They hinted to us that they would take our suggestion.

At the first hint of trouble, they left.
He gave me a hint that I was being cheated.
Should I drop a hint (= give a hint ) to Matt?

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