keepback是什么意思啊
keep back
留下；隐瞒；阻止；
例句
She was unable to keep back her tears.
Keep back straight and bend knees.
背要直，只弯两膝。
The fireman told me to keep back.
消防队员要我站远点。
I will keep back you make trouble.
我将阻止你惹麻烦。
She struggled to keep back her tears.
她努力地忍住泪水。
She tried to keep back her indignation.
她试图抑制住她的愤怒。