When they cleaned up the painting they discovered a Holbein underneath.
他们擦这幅画时发现下面有一幅霍尔拜因的作品。
The remaining 423 students merely cleaned their teeth when they went to bed and when they got up in the morning.
剩下的423名学生只在上床睡觉和早上起床的时候刷牙。
Soft and weak references can be cleaned up when they are no longer referenced.
Soft和weak引用在引用不复存在时可被清除。
Soft and weak references can be cleaned up when they are no longer referenced.
Soft和weak引用在引用不复存在时可被清除。
应用推荐