【New words and expressions】 生词和短语

●rough                             adj. 崎岖不平的

●boulder                           n. 大石块

●pit                                   v. 使得坑坑洼洼

●perturb                           v. 使不安

●underestimate                v. 低估

●swerve                           v. 急转变

●scoop                             v. 挖出

●hammer                          v. （用锤）击打，锤打

●ominously                       adv. 有预兆的，不祥的新概念英语教材下载

●rip                                   v. 划破，撕，扯

●petrol                             n. 汽油

●stretch                            n. 一大片（平地或水）

●obstacle                         n. 障碍

●clump                              n. 丛，簇

●fissure                            n. （石、地的）深缝

●renew                             v. 重复

●pleading                         n. 恳求

●gear                               n. （汽车）排档

●astride                            prep. 骑，跨

●crack                               n. 缝隙

●zigzag                            n. "之"字形

●shallow                           adj. 浅的

●grind                              v. 磨擦

●halt                                 n. 停

●dashboard                      n. （汽车上的）仪表盘