1. snake [sneɪk]
[释义] n. 蛇
[例句] the scaly skin of the snake 蛇的鳞状皮
2. prey [preɪ]
[释义] n. 被掠食者,牺牲者,掠食 v. 捕食,掠夺,折磨
[例句] a beast/bird of prey, ie one that kills and eats others, eg a tiger, an eagle 食肉猛兽[禽]（如虎、 鹰）
3. correspondence [ˌkɔrɪˈspɔndəns]
[释义] n. 通信,信件;(with)符合;(to)相当于,对应
[例句] a close/not much correspondence between the two accounts 两种叙述接近[不太]一致.
4. migrate [maɪˈgreɪt]
[释义] v. 迁移,移居(国外)
[例句] These birds migrate to North Africa in winter. 这些鸟冬天迁徙到北非.
5. obstacle [ˈɔbstəkl]
[释义] n. 障碍(物),妨碍,阻碍,干扰
[例句] obstacles on the race-course 赛马跑道上设置的障碍物
6. metropolitan [ˌmetrəˈpɔlɪtən]
[释义] a. 首都的,主要都市的,大城市
[例句] the population of metropolitan New York, ie not including its suburbs 纽约市的人口（不包括郊区）. n
7. excitement [ɪkˈsaɪtmənt]
[释义] n. 刺激,激动,兴奋
[例句] The news caused great excitement. 这消息令人极为兴奋.
8. borrow [ˈbɔrəu]
[释义] vt. 借，借入；(思想、文字等)采用，抄袭
[例句] borrow (money) from the bank, a friend 向银行、朋友借（钱）
9. kneel [ni:l]
[释义] v. 跪,下跪
[例句] She knelt in prayer. 她跪下祈祷.
10. urgent [ˈɜ:dʒənt]
[释义] a. 急迫的，紧要的，紧急的
[例句] an urgent message, case, cry for help 紧急的消息、 情况、 呼救
