(as) poor as a church mouse (或 as church mice)

extremely poor

一貧如洗，貧困潦倒

poor little rich boy (或 girl)

a wealthy young person whose money brings them no contentment (often used as an expression of mock sympathy)

[常用來表示含嘲弄語氣的同情]可憐的小富哥（或妹）

the poor man's —

an inferior or cheaper substitute for the thing specified

較劣質的（或較便宜的）替代品

corduroy has always been the poor man's velvet.

燈芯絨一直是天鵝絨的便宜替代品。

poor relation

a person or thing that is considered inferior or subordinate to others of the same type or group

無名小卒，微不足道的人（或東西）

for many years radio has been the poor relation of the media.

多年來收音機一直是媒體中微不足道的一種形式。

take a poor view of

regard with disfavour or disapproval

不喜歡，看不起