On this occasion, he had fallen at once into a dreamless sleep.
这一次，他立刻进入了无梦的睡眠。
youdao
He fell into a deep dreamless sleep.
他酣然入睡，一夜无梦。
《柯林斯英汉双解大词典》
应用推荐
模块上移
模块下移
不移动