| 1. | All sorts of difficulties cropped up .
各种各样的困难意想不到地出现了。 |
| 2. | The subject cropped up as we talked .
我们交谈时无意中涉及到了这个问题。 |
| 3. | All sorts of unexpected difficulties cropped up .
种种想像不到的困难都发生了。 |
| 4. | New difficulties cropped up .
发生新的困难。 |
| 5. | Keep calm when problems crop up .
遇事冷静。 |
| 6. | I shouldn't be surprised if he cropped up this evening .
如果他今晚突然出现，我并不感到惊讶。 |
| 7. | Proper measures were taken as soon as erroneous ideas cropped up .
错误思想一冒头，就及时采取了措施。 |
| 8. | A different example where accuracy is lost will crop up unexpectedly .
损失精度的另一个例子会意外地出现。 |
| 9. | We can 't get unwary just because nothing unusual has cropped up .
不能因为没发生什么问题就麻痹大意起来。 |
| 10. | Watch out for harmful tendencies and deal with them the moment they crop up .
不良倾向一冒尖儿就不要放过它。 |
