| 1. | The silicone conveniently comprises a polysiloxane .
硅酮可方便地由聚氧硅烷组成。 |
| 2. | The ketone(8) is available .
酮（8）易于获得。 |
| 3. | Blood progesterone remains constant throughout pregnancy .
血液孕酮含量在全妊娠期保持不变。 |
| 4. | There may be a sweet sickly smell of ketosis in cattle .
牛的酮病会有一种甜而令人讨厌的气味。 |
| 5. | Testosterone is an androgen or male steroid hormone .
睾丸甾酮是一种雄性激素或雄性类固醇激素。 |
| 6. | Thermolysis of the latter furnished the cyclohexadienone system .
后者经过热解，就转变成环己二烯酮的衍生物。 |
| 7. | Its metallation and addition to cyclopentanone proceeded well to 40 .
到40,其金属取代和加入环戊酮都反应顺利。 |
| 8. | All the chief difficulties crop up in the synthesis of the enone(1) .
所有的主要难点都涌现在烯酮（1）的合成中。 |
| 9. | The keti acid is converted to isoleucine by the activity of amino transferases .
酮酸被氨基转移酶转变为异亮氨酸。 |
| 10. | The biochemical events that lead to ketosis have not been precisely defined .
导致酮病的生化反应还没有完全弄清楚。 |
