如题所述
difficulty是名词，意为：困难;难题;难事;困境;艰难;费劲;辛苦;困难程度;难度
复数： difficulties（其复数为不规则变化，改y为i再加es)
名词单复数变化规则
速记口诀
（1） 困难；难题；难事；困境
（a problem; a thing or situation that causes problems
the difficulties of English syntax）
children with severe learning difficulties
学习上有严重困难的孩子
We've run into difficulties/difficulty with the new project.
我们在这项新工程中遇到了难题。
He got into difficulties while swimming and had to be rescued.
他游泳时遇险，只好靠人营救。
The bank is in difficulty/difficulties .
这家银行处境困难。
It was a time fraught with difficulties and frustration.
这是一个充满困难和挫折的时期。
（2）艰难；困难；费劲；辛苦
the state or quality of being hard to do or to understand; the effort that sth involves
I had considerable difficulty (in) persuading her to leave.
我费了好大的劲说服她离开。
I had no difficulty (in) making myself understood.
我毫不费力地表达了自己的意思。
