2 . Mukap built a fire outside and laid stones on it to heat. (英译汉)

3 . If you want to hold a koala, you have to go to certain licensed zoos where animal experts make sure that the koalas selected for each session are in a good state for human contact and that they are handled for only a limited time and on a limited frequency of occasions. (英译汉)

4 . Continued greenhouse gas emissions will result in further warming and long-lasting changes to the global climate. （英译汉）

5 . In other words, if you want to be healthy, you have to cut down on desserts, and cut out sweet drinks altogether. (英译汉)

6 . To sum up, one cannot deny the fact that studying abroad has its disadvantages, so when you think about studying abroad, you should consider these many factors.（英译汉）

7 . Each year, millions of people around the world get cholera and many die from it. （英译汉）

8 . As a graduate assistant at the California institute of Technology during the 1930s, Qian helped conduct important research into rocket propulsion, and in the 1940s, he and several other people founded the Jet Propulsion Laboratory, now one of NASA'S leading space-exploration centres.(英译汉)

10 . On the first day, I set off to the games early with my friend Burin. (英译汉)