| 1. | Such a helerocycle is found in pyrylium salts . 吡喃盐就是这类的杂环。 |
| 2. | The wine sellers were putting up their booths . 各种酒类的小贩正在搭木棚。 |
| 3. | We encounter only displacements of the first type . 我们只遇到第一类的驱替。 |
| 4. | He is a bank manager or something . 他是银行经理这类的人。 |
| 5. | Do n't spend your time writing this sort of squibs . 不要花时间写这类的讽刺短文了。 |
| 6. | Diphenyl carbonate shows a typical vinyl ester effect . 碳酸二苯酯表现典型的乙烯的酯类的效应。 |
| 7. | Only a very limited amount of data is available on thiol esters . 有关硫醇酯类的数据非常有限。 |
| 8. | His dapper self-confidence seemed impenetrable to such hints . 这类的暗示似乎动摇不了他坚定的自信。 |
| 9. | Many treatises in different languages have been published on pigeons . 关于鸽类的著作,用各种文字写的很多。 |
| 10. | The infra-red spectra of quinones present a number of interesting features . 醌类的红外光谱具有一些有趣的性质。 |