| 1. | To get high rates of advance it is sometimes necessary to work on two, three or even four shifts a day .
为了取得高的掘进速度，有时有必要在一天内分两班、三班、甚至四班工作。 |
| 2. | What class are you in ? i am in middle class4
你在哪个班级上课啊？我在中四班！ |
| 3. | North china regional manager , fourth shift corporation
四班公司华北地区经理 |
| 4. | What class are you in ? ? ? i am in middle class four
你是哪个班级的啊？ ? ?我在中四班！ |
| 5. | Consulting manager , fourth shift corporation
四班公司中国实施经理 |
| 6. | Next sunday , students of class four will go outdoors for a picnic
下星期天四班学生将出去野餐。 |
| 7. | 4 departures during morning peak hours
早上繁忙时间开出四班 |
| 8. | 4 departures during evening peak hours
晚上繁忙时间开出四班 |
| 9. | Founder and general manager , fourth shift asia computer corporation
四班亚细亚计算机有限公司创始人及总经理 |
| 10. | Next let he yuhang from class four give us his lecture : motherly love
下面，请听四班何雨航同学的演讲：母爱。 |
