练习材料:
Lesson 42-2 Recording an earthquake
ˈlɛsn 42-2 rɪˈkɔːdɪŋ ən ˈɜːθkweɪk
But instruments far more delicate than that were needed if any really serious advance was to be made. The ideal to be aimed at was to devise an instrument that could record with a pen on paper, the movements of the ground or of the table as the quake passed by. While I write my pen moves, but the paper keeps still. With practice, no doubt, I could in time learn to write by holding the pen still while the paper moved. That sounds a silly suggestion, but that was precisely the idea adopted in some of the early instruments (seismometers) for recording earthquake waves. But when table, penholder and paper are all moving, how is it possible to write legibly? The key to a solution of that problem lay in an everyday observation.
bʌt ˈɪnstrʊmənts fɑː mɔː ˈdɛlɪkɪt ðæn ðæt wɜː ˈniːdɪd ɪf ˈɛni ˈrɪəli ˈsɪərɪəs ədˈvɑːns wɒz tuː biː meɪd. ði aɪˈdɪəl tuː biː eɪmd æt wɒz tuː dɪˈvaɪz ən ˈɪnstrʊmənt ðæt kʊd ˈrɛkɔːd wɪð ə pɛn ɒn ˈpeɪpə, ðə ˈmuːvmənts ɒv ðə graʊnd ɔːr ɒv ðə ˈteɪbl æz ðə kweɪk pɑːst baɪ. waɪl aɪ raɪt maɪ pɛn muːvz, bʌt ðə ˈpeɪpə kiːps stɪl. wɪð ˈpræktɪs, nəʊ daʊt, aɪ kʊd ɪn taɪm lɜːn tuː raɪt baɪ ˈhəʊldɪŋ ðə pɛn stɪl waɪl ðə ˈpeɪpə muːvd. ðæt saʊndz ə ˈsɪli səˈʤɛsʧən, bʌt ðæt wɒz prɪˈsaɪsli ði aɪˈdɪə əˈdɒptɪd ɪn sʌm ɒv ði ˈɜːli ˈɪnstrʊmənts (seismometers) fɔː rɪˈkɔːdɪŋ ˈɜːθkweɪk weɪvz. bʌt wɛn ˈteɪbl, ˈpɛnˌhəʊldər ænd ˈpeɪpər ɑːr ɔːl ˈmuːvɪŋ, haʊ ɪz ɪt ˈpɒsəbl tuː raɪt ˈlɛʤəbli? ðə kiː tuː ə səˈluːʃən ɒv ðæt ˈprɒbləm leɪ ɪn ən ˈɛvrɪdeɪ ˌɒbzə(ː)ˈveɪʃən
任务配置:L0、L4
知识笔记:
单词与短语
练习感悟:
今天搞得有点太晚了,我发现有一点儿空闲时间我都可以利用起来看小说。
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