go pear-shaped
US /ɡoʊ pɛər-ʃeɪpt/
UK /ɡoʊ pɛər-ʃeɪpt/

1.
泡湯, 出岔子
if a plan or situation goes pear-shaped, it goes wrong
:
•
Our plans for the picnic went pear-shaped when it started to rain heavily.
當大雨傾盆而下時,我們的野餐計劃泡湯了。
•
The whole project went pear-shaped because of poor management.
由於管理不善,整個項目泡湯了。