A difficult task or challenge.
一个困难的任务或挑战。 (Yī gè kùn nán de rèn wu huò tiǎo zhàn.)
"Getting this project done on time is going to be a hard row to hoe."
"按时完成这个项目将是 一个困难的任务。" (Àn shí wán chéng zhè ge xiàng mù jiāng shì yī gè kùn nán de rèn wu.)
Not clear or not paying attention
money saved for the future
to make an effort to understand or care about someone else's...
To make the right moves to achieve success.
to gradually work on something to achieve a result
to speak or perform without preparation