They lay snug and warm amid the blankets and watched their sister hard at work.
他们躺在温暖舒服的毯子中,看着姐姐辛苦地干活。
《柯林斯英汉双解大词典》
2
You can't lay down hard and fast rules.
规则不能定得太死。
《牛津词典》
3
For today, the story may be most important as an illustration of how secrecy can become a burden that is hard to lay down and a habit that is hard to break.