New Words：

bump [bʌmp] v.碰；撞
bump into 偶然碰到；遇见；(意外)撞到

Sample Sentences：

She bumped her head against a tree.
You could fall off the bed and bump your head!

In the dark I bumped into a chair.
I am really so sorry to bump into you.
I often bump into him at the supermarket.

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