| 1. | It 's difficult to ascertain the coal deposits ... 煤储量很难探明。 |
| 2. | I'll endeavor to ascertain her mind . 我得先努力弄清楚她的想法。 |
| 3. | We have written to christminster to ascertain . 我们已经写信到基督寺问过了。 |
| 4. | An autopsy was needed to ascertain the cause of his death . 需验尸方能确定他的死因。 |
| 5. | They are doing everything possible to ascertain his whereabouts . 他们正在尽力调查他的下落。 |
| 6. | It has been difficult to ascertain the correct source of origin . 要查实材料的正确起源很困难。 |
| 7. | It is difficult to ascertain the exact duration of protection . 要弄清确切的予防有效期并不容易。 |
| 8. | We must ascertain the responsibility in light of different situations . 我们必须根据不同情况判定责任。 |
| 9. | The court must therefore ascertain the "proper law" of the contract . 因此,法院务必查明该契约的“准据法”。 |
| 10. | The pathway of ddt degradation in soil has not been fully ascertained . 在土壤中滴滴涕降解的途径还没有充分调查。 |