训练结束后，教练让我们放松一下肌肉。
After the workout, the coach told us to ___slacken our muscles.
随着夜晚的到来，风势逐渐减弱了。
The wind ___slackened as night fell.
随着时间推移，他的工作节奏明显慢了下来。
His work pace showed signs of ___slackening as time went by.
浙公网安备33010902004675号