铝合金刀片:if you keep doing this "lightning speetd"reading for a period of time

if you keep doing this "lightning speetd"reading for a period of time if you keep doing this "lightning speetd"reading for a period of time keep doing是什么意思? keep doing啥意思 do you want these motherfuckers to keep doing this in your own back yard keep doing和keep sth do 虚拟语气if you were sorry,then why you doing it keep sb doing sth 和 keep doing sth 是什么意思 区别 翻译:If you always brush your tongue when you brush teeth,you can keep away a bad samell. keep up\ keep on\keep doing 的区别