1. "The movements are very slow and careful and involve a great deal of body movement and standing on a single limb.
    它的动作缓慢、细腻，动则牵引全身，立则依附单腿。

2. A single tree may seem large compared to a person.
    和人相比，一棵树看起来很大。

3. An immediate search over 100,000 square miles of sea failed to turn up a single piece of the missing plane.
    随后立即展开了范围宽达100,000平方英里的海面搜索，但没有发现一片失踪飞机的残骸。

4. A single gene will code for only one of the many molecules and cell proteins that are the building blocks of the brain.
    一个基因仅仅为构成大脑的众多分子和细胞蛋白中的一个指定遗传密码。

5. You'll find it easier, then, to keep from settling for the single piece of candy.
    那样，你就不会轻易满足于只吃一块糖了。

6. She took three letters from the pockets of her dress and handed them to Easton.
    她从口袋里掏出三封信递给了伊斯顿。

7. She is right-handed, and now she is unable to move her right arm and leg — they are worthless to her.
    她是个右撇子，如今却不能移动她的右胳膊右腿——对她而言，它们就没有用了。

8. Justice had been done even before the man was handed over to the police.
    甚至在那人还没被送交给警察之前，正义就已得到了伸张。

9. “Please write down your name for me.” I handed my notebook to him.
    “能否请您把你的名字写给我看看。”我把笔记本递给了他。

10. — Children in single-parent households — usually families with only a mother present — are much more likely to be overtaken by poverty than those who live with two parents, largely because of the loss of support from the fathers.
    ——单亲家庭——通常是只有母亲的家庭——的孩子，较之与双亲一起生活的孩子，更可能遭受贫穷，这主要是因为缺少父亲的经济支持。