| 1 | Check whether the bars is blocked. | |
| 2 | Check whether the bars is blocked. | |
| 3 | Grandmother combs her hair at the window every morning with a double-edged fine-tooth comb. | |
| 4 | The boxwood comb is worth observing. Within a length of 5 centimeters, the comb has 74 teeth. It is much delicate than the general combs used nowadays. | |
| 5 | Moreover, it can crush ore which has moisture and earth in it because it adopts discharging grates in the same direction. |