练习材料：
Lesson 18-3 Porpoises
This is not easy,and may require two porpoises working together. In another game, as the turtleswims across the oceanarium, the first porpoise swoops down from above andbutts his shell with his belly. This knocks the turtle down several feet. He nosooner recovers his equilibrium than the next porpoise comes along and hits himanother crack. Eventually the turtle has been butted all the way down to thefloor of the tank. He is now satisfied merely to try to stand up, but as soonas he does so a porpoise knocks him flat. The turtle at last gives up bypulling his feet under his shell and the game is over.
ˈpɔːpəsɪz
ðɪs ɪz nɒt ˈiːzi,
ænd meɪ rɪˈkwaɪə tuː ˈpɔːpəsɪz ˈwɜːkɪŋ təˈɡɛðə. ɪn əˈnʌðə ɡeɪm, æz ðə ˈtɜːtᵊl swɪmz əˈkrɒs ði oceanarium, ðə fɜːst
ˈpɔːpəs swuːps daʊn frɒm əˈbʌv ænd bʌts hɪz ʃɛl wɪð hɪz ˈbɛli. ðɪs nɒks ðə ˈtɜːtᵊl
daʊn ˈsɛvrəl fiːt. hiː nəʊ ˈsuːnə rɪˈkʌvəz hɪz ˌɛkwɪˈlɪbriəm ðæn ðə nɛkst ˈpɔːpəs
kʌmz əˈlɒŋ ænd hɪts hɪm əˈnʌðə kræk. ɪˈvɛnʧəli ðə ˈtɜːtᵊl hæz biːn ˈbjuːtɪd ɔːl
ðə weɪ daʊn tuː ðə flɔːr ɒv ðə tæŋk. hiː ɪz naʊ ˈsætɪsfaɪd ˈmɪəli tuː traɪ tuː
stænd ʌp, bʌt æz suːn æz hiː dʌz səʊ ə ˈpɔːpəs nɒks hɪm flæt. ðə ˈtɜːtᵊl æt lɑːst ɡɪvz ʌp baɪ ˈpʊlɪŋ hɪz fiːt ˈʌndə hɪz ʃɛl ænd ðə ɡeɪm ɪz ˈəʊvə.
任务配置：L0 + L4
知识笔记：
单词：1、oceanarium：水族馆，海洋馆，2、swoop：猛扑，落下，3、butt：屁股，臀部，抵，顶，支撑，4、belly：腹部，肚皮，5、no sooner：不早于，不久之后，6、equilibrium：平衡，平静，7、crack：裂缝，崩裂，8、flat：平，平坦的，9、
音标：
练习感悟：休息日经常很难保证自己可以完成任务，不过这两天我还是按时完成任务了，很不错的感觉。
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