20190406 周六 Day178

练习材料：

原文
[Day 178 2019-04-06]
L42-2: Modern cavemen
The deepest known cave in the world is the Gouffre Berger near Grenoble. It extends to a depth of 3,723 feet. This immense chasm has been formed by an underground stream which has tunneled a course through a flaw in the rocks. The entrance to the cave is on a plateau in the Dauphine Alps. As it is only six feet across, it is barely noticeable. The cave might never have been discovered had not the entrance been spotted by the distinguished French pot-holer, Berger. Since its discovery, it has become a sort of pot-holers' Everest. Though a number of descents have been made, much of it still remains to be explored. A team of pot-holers recently went down the Gouffre Berger. After entering the narrow gap on the plateau, they climbed down the steep sides of the cave until they came to a narrow corridor. They had to edge their way along this, sometimes wading across shallow streams, or swimming across deep pools. Suddenly they came to a waterfall which dropped into an underground lake at the bottom of the cave.

2019-04-06]
ɛl42-2: ˈmɒdən ˈkeɪvmən
ðə ˈdiːpɪst nəʊn keɪv ɪn ðə wɜːld ɪz ðə Gouffre ˈbɜːgə nɪə Grenoble. ɪt ɪksˈtɛndz tuː ə dɛpθ ɒv 3,723 fiːt. ðɪs ɪˈmɛns kæzm hæz biːn fɔːmd baɪ ən ˈʌndəgraʊnd striːm wɪʧ hæz ˈtʌnld ə kɔːs θruː ə flɔː ɪn ðə rɒks. ði ˈɛntrəns tuː ðə keɪv ɪz ɒn ə ˈplætəʊ ɪn ðə Dauphine ælps. æz ɪt ɪz ˈəʊnli sɪks fiːt əˈkrɒs, ɪt ɪz ˈbeəli ˈnəʊtɪsəbl. ðə keɪv maɪt ˈnɛvə hæv biːn dɪsˈkʌvəd hæd nɒt ði ˈɛntrəns biːn ˈspɒtɪd baɪ ðə dɪsˈtɪŋgwɪʃt frɛnʧ pɒt-ˈhəʊlə, ˈbɜːgə. sɪns ɪts dɪsˈkʌvəri, ɪt hæz bɪˈkʌm ə sɔːt ɒv pɒt-ˈhəʊləz ˈɛvərɪst. ðəʊ ə ˈnʌmbər ɒv dɪˈsɛnts hæv biːn meɪd, mʌʧ ɒv ɪt stɪl rɪˈmeɪnz tuː biː ɪksˈplɔːd. ə tiːm ɒv pɒt-ˈhəʊləz ˈriːsntli wɛnt daʊn ðə Gouffre ˈbɜːgə. ˈɑːftər ˈɛntərɪŋ ðə ˈnærəʊ gæp ɒn ðə ˈplætəʊ, ðeɪ klaɪmd daʊn ðə stiːp saɪdz ɒv ðə keɪv ənˈtɪl ðeɪ keɪm tuː ə ˈnærəʊ ˈkɒrɪdɔː. ðeɪ hæd tuː ɛʤ ðeə weɪ əˈlɒŋ ðɪs, ˈsʌmtaɪmz ˈweɪdɪŋ əˈkrɒs ˈʃæləʊ striːmz, ɔː ˈswɪmɪŋ əˈkrɒs diːp puːlz. ˈsʌdnli ðeɪ keɪm tuː ə ˈwɔːtəfɔːl wɪʧ drɒpt ˈɪntuː ən ˈʌndəgraʊnd leɪk æt ðə ˈbɒtəm ɒv ðə keɪv.

95 177。 82

任务配置：

L0+L4

知识笔记：

练习感悟（做完事情的感触和吐槽 ，用时）：

开始时刻：1210
结束时刻：
用时：