to stand, sit or move in a lazy way, often with your shoulders and head bent forward 没精打采地站（或坐、走）；低头垂肩地站（或坐、走）
Sit up straight. Don’t slouch.
挺起胸坐直，别歪歪斜斜的。
Try not to slouch when you are sitting down…
坐的时候尽量不要无精打采的。
She has recently begun to slouch over her typewriter.
最近，她坐在打字机前就开始变得无精打采的。