have something to offer

have something available to be used or appreciated

有東西可用（或可欣賞）

offer one's hand

extend one's hand to be shaken as a sign of friendship

伸出友好的手

on offer

available

可利用的

the number of permanent jobs on offer is relatively small.

長期工作的機會相對較小。

open to offers

willing to sell something or do a job for a reasonable price

愿意以合適價格出售某物；愿意以合適代價做某一工作

offer something up

(technical)put something in place to test or assess its appearance or fit

(技)把…擺好（或放到位）（以便檢測或評估其外觀或狀況）

the infill panels are offered up and bolted in position.

用于鑲拼的填塊已擺好位置并用螺栓固定，以便檢驗外觀效果以及是否合適。