in bounds

inside the part of a sports field or court in which play is conducted

在運動場地邊線以內

out of bounds

(of a place) outside the limits of where one is permitted to be

超出界限

his kitchen was &B{out of bounds to} me at mealtimes.

用餐時間，我不得進他的廚房。

bound up in

focusing on to the exclusion of all else

熱衷于，獻身于，沉迷于

she was too bound up in her own misery to care that other people were hurt.

她沉迷于自己的痛苦之中無法自拔，根本沒去想別人是否受到傷害。

bound up with (或 in)

closely connected with or related to

與…有密切關系的

democracy is bound up with a measure of economic and social equality.

民主與經濟和社會平等程度有著密切關系。

I'll be bound

used to emphasize that one is sure of something

我敢肯定

she's hatching more little plots, I'll be bound!.

我敢肯定她正在策劃更多的小陰謀！。

I'm bound to say

used to precede a statement which one feels it is one's duty to make, however unwelcome it may be to the hearer

我有責任說

I'm bound to say that I have some doubts.

我有責任告訴大家我有些疑問。