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寝る， 寐る， ねる
1. to sleep (lying down)
2. to go to bed, to lie in bed
3. to lie down
4. to sleep (with someone, i.e. have intercourse)
5. to lie flat (e.g. of hair)
6. to lie idle (of funds, stock, etc.)
7. to ferment (of soy sauce, miso, etc.)
睡觉（躺下）；上床睡觉，躺在床上；躺下
は
1. indicates sentence topic
2. indicates contrast with another option (stated or unstated)
3. adds emphasis
指示句子的主题；表示与另一选项（无论是否明确提及）形成对比；表示强调
で
1. at, in
2. at, when
3. by, with
4. within, in
5. and then, so
6. and, then
7. let me tell you, don't you know
表示范围
