to remain behind or hesitate to act
留在后面或犹豫不决 (liu zai hou mian huo you yu bu jue)
"If you hang back, you might miss the opportunity."
"如果你留在后面，你可能会错失机会。" (ru guo ni liu zai hou mian, ni ke neng hui cuo shi ji hui)
to say something embarrassing or inappropriate
feeling hopeless and defeated
To have bad manners or lack social etiquette.
Try as hard as you can.
to say something without thinking carefully or checking
used to show that you are very thankful beyond words
