- (使)延伸到：
The border extends to the river.
边界延伸到河边。
The fence extends to the meadow.
篱笆一直延伸到牧草地。
- (使)及至；(使)扩大至：
The president's power extends to all parts of the whole country.
总统的权力及至全国各个方面。
- 给予(某人)(欢迎、邀请、帮助等)：
They extended a warm welcome to me.
他们热烈欢迎我。
It was kind of you to extend an invitation to me.
你邀请了我，真好。
to extend a helping hand to the poor
对穷人伸出援助之手
- 伸出：
to extend one's hand to someone
伸手与某人握手