大家都搜：
in at on by
1、in on at───在
2、on in at───在…上
3、on at in───在中打开
4、at in on───在
5、on at───在
6、in on at for───参加
7、in at on───在上的
8、on at in weekend───在周末
9、on by───于
1、How would you cope with working 50 hours a week by yourself in a small room at home, for days, months and years on end?───一个人在家里的小房间里一周工作50个小时，日复一日，月复一月，年复一年，你是如何应对的？
2、Any device that's built to receive a wireless signal at a specific frequency can be overwhelmed by a stronger signal coming in on the same frequency.───任何在特定频率接收无线信号的设备都可能被同一频率的强的信号淹没。
3、The nocturnal animals hide in underwater caves by day, then venture out at night, feeding on small fish, squid, and octopus.───这种夜行性动物白天时隐藏在水底洞XueLi，晚上才出来冒险，它们以小鱼、乌贼和章鱼为食。