| 1. | The molecules are held together by van der waals forces .
分子是由范德华力约束在一起的。 |
| 2. | The tory party always holds together in times of crisis .
保守党在紧要关头总是能团结一致。 |
| 3. | Your letter should hold together in mood and emotion as well as in substance .
你的信在语气、感情以至内容上都要融为一体。 |
| 4. | Each chromosome consists of two chromatids held together by the centromere .
每个染色体由两个染色单体所组成，它们被一个着丝点联结在一起。 |
| 5. | Liquids whose molecules are held together by hydrogen bonds are called associated liquids .
液体的分子通过氢键结合在一起时，称为缔合液体。 |
| 6. | Stone bridges consist of pillars, abutments and arches made up of stones held together by mortar .
石桥由灰浆结合在一起的石头墩子、桥台和桥拱组成。 |
| 7. | Exciton is electron-hole pair held together by their mutual coulomb interaction .
激子就是由电子和空穴在相互间的库仑力作用下，相互维持在一起的电子--空穴对。 |
| 8. | The machine survived because it was held together by the twin cords of patronage and loyalty .
这种核心小集团存在下来，是由于施恩与图报相互为用，使其团结一致。 |
| 9. | Amphiboles are related to the pyroxenes, forming double chains, again being held together by cations .
角闪石类与辉石类有关，构成双链，也是被阳离子联系在一起的。 |
| 10. | Blackstone consists of three large pieces and some fragments, surrounded by a stone ring and held together with a silver band .
黑石由三大块和若干小块组成，周围环以银框和石环。 |
