缓冲: buffer; cushion; slow down attack; buff; dampen; damping; amortize; redeem; redemption; shock mitigation 短语和例子扮演东西方阵营之间的缓冲国角色 act as buffers between the western and the eastern camps; 弹性缓冲
退: 动词1.(向后移动) retreat; draw back; move back 短语和例子后退 draw back; fall back; retreat; 进退两难 difficult to advance or to retreat; 敌人已经退了。 the enemy has retreated. 她往后退了几步。 she stepped back a few pa