| 1. | Then it is often called survivor growth . 为此,常称它为生存木生长。 |
| 2. | The value of commodities often fluctuates . 商品的价值是经常变动的。 |
| 3. | Often they mark the path with buoys . 他们常常用浮标作为航道的标志。 |
| 4. | Errors often have more than one component . 误差经常有不只一项组元。 |
| 5. | They often fall out over some trifling matter . 他们常常因小事争吵。 |
| 6. | Stock dyeing is used more often than before . 原料染色比以前用的多。 |
| 7. | The eyes are often retracted from dehydration . 眼睛常因脱水而凹陷。 |
| 8. | He makes mistakes , and that very often . 他犯了错误,而且是常常犯。 |
| 9. | A sick person often has fur on his tongue . 一个病人舌上常常有舌苔。 |
| 10. | This method is often used in practice . 在实际中人们常采用这种方法。 |