单词on-one-s-knees
Perhaps continual prayer is not merely the time spent on one"s knees but a continuing, ongoing intimacy with God.
或许不住祷告，所指的不只是屈膝祷告的时间，而是一种与神毫无间断的亲密关系。
A computer small enough to be used on one"s knees.
一台小得足以在膝上使用的电脑。
jump a baby up and down on one"s knees
把孩子抱在膝上上下颠动。
Get down on one"s knees
是跪下，屈膝的意思