夜里游泳很危险。
夜裏游泳很危險。
Swimming at night is dangerous.
夜裡
Meaning
during the night
at night
nighttime
Examples
夜里游泳很危险。
夜裏游泳很危險。
Swimming at night is dangerous.
我在夜里到达了大阪火车站。
我在夜裏到達了大阪火車站。
I arrived at Osaka Station at night.
猫在夜里看得更清楚。
貓在夜裏看得更清楚。
Cats see better at night.