to succeed in achieving two things in a single action
一箭双雕
"I can kill two birds with one stone by listening to a podcast while I exercise."
"我可以 一箭双雕，一边听播客一边锻炼。"
to guide someone without directly getting involved in their...
to lead someone through a process or path
to buy something that is defective or worthless
to learn how to do a particular job or activity
a part of the complete solution or understanding
to continue focusing on what needs to be done
