Definition
A polite expression used to acknowledge someone's thanks, often implying that one feels they should have done more to assist.
微不足道（的）
"Thank you for taking care of my cat." "It's the least I can do, considering how much you've helped me before."
「谢谢你照顾我的猫。」「这是我应该做的，考虑到你之前帮了我这么多。」
"Thank you so much for helping me move yesterday." "It's the least I can do, you're my best friend."
「非常感谢你昨天帮我搬家。」「这是我应该做的，你是我最好的朋友。」
"Thank you for preparing the presentation for the meeting." "You're welcome, it's the least I can do, I'm glad I could help."
「谢谢你为会议准备了简报。」「不客气，这是我应该做的，我很高兴能帮忙。」