between the devil and the deep blue sea;between the rock and the hard place是什么意思

用法例句

Thinking on Life Existence from In Love We Trust;

从《左右》中思索生命存在

This article discusses the wrist movement in piano playing from three aspects: up-down movement, left-right movement as well as the integrated movement.

文中从“手腕的上下动作”、“手腕的左右动作”和“手腕的上下和左右结合的综合动作”三个方面论述了在钢琴演奏过程中手腕的运动方向。