1. Their sleeping- bags were warm and comfortable, so they all slept soundly.
    他们的睡袋又暖和又舒服，所以都睡得很香。

2. Their sleeping- bags were warm and comfortable, so they all slept soundly.
    他们的睡袋又暖和又舒服，所以都睡得很香。

3. Their sleeping bags were warm and comfortable, so they all slept soundly.
    睡袋既暖和又舒服，所以，他们都睡得很香。

4. The wolf's blood flowed into his mouth. He held the wolf with his teeth and killed it; then he fell on his back and slept.
    狼的血流进了他的嘴。他死死地咬住狼，直到把它咬死。然后他倒下，睡着了。

5. 3. Individuals who slept near a smoky fire usually did not get the disease.
    3． 在烟火旁睡觉的人通常不会染病。

6. He slept very well for the first two nights, but on the third night, a storm blew up.
    头两天晚上，他睡得非常好。但第三天晚上起了风暴。

7. 2. People who slept under fine nets were less susceptible to malaria than those who did not sleep under nets.
    2． 在蚊帐内睡觉的人不像不用蚊帐的人那样容易染上疟疾。

8. 1. People who slept out of doors were more likely to contract malaria than those who didn´t.
    1． 在户外睡觉的人比那些不在户外睡觉的人更容易感染疟疾。

9. I kept watch while they slept.
    当他们睡觉时我守备着.

10. It was necessary, therefore, to invent instruments that neither slumbered nor slept.
    因此，有必要发明一种仪器，既不打盹儿，也不睡觉。

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