| 1. | I don ' t know . klaus is supposed to check it every six months
不知道，克劳斯应该每6个月检查一次 |
| 2. | Remember to check the gas pipes of your building every 18 months
记得每十八个月检查一次大厦供气喉！ |
| 3. | Inspect your property monthly and read your reports from the management company faithfully
按月检查并认真阅读管理公司的报告。 |
| 4. | Legislators promise to keep spending in check by reviewing it every three months
国家立法者也承诺定期检查政府的开销，并且会没三个月检查一次。 |
| 5. | Check your smoke detectors once a month , and make sure they have good batteries
每个月检查一下你们办公室的烟雾探测器，保证这些探测器的电池都有充足的电量。 |
| 6. | She says doctors should look for signs of autism when they examine babies at eighteen months and twenty - four months
她说，医生应该在婴儿18个月至24个月检查一些自闭症的信号。 |
| 7. | The system should be maintained by trained personnel of the operator or the system supplier preferably at quarterly intervals
应由系统供应商定期检查保养整个系统，宜至少每隔三个月检查一次。 |
| 8. | 6 the system should be maintained by trained personnel of the operator or the system supplier preferably at quarterly intervals
6应由系统供应商定期检查保养整个系统，宜至少每隔三个月检查一次。 |
| 9. | The system should be regularly maintained by trained personnel of the operator or the uv lamp supplier preferably at least once every 6 months
应由系统供应商或曾受训练的人员定期检查保养，宜至少每隔六个月检查一次。 |
| 10. | 5 the system should be regularly maintained by trained personnel of the operator or the uv lamp supplier preferably at least once every 6 months
5应由系统供应商或曾受训练的人员定期检查保养，宜至少每隔六个月检查一次。 |
