练习材料:
Lesson 42-4 Recording an earthquake
But as the papermoved from side to side under the pen point, its movement would be recorded inink upon its surface. It was upon this principle that the first instrumentswere made, but the paper was wrapped round a drum which rotated slowly. As longas all was still, the pen drew a straight line, but while the drum was beingshaken, the line that the pen was drawing wriggled from side to side. Theapparatus thus described, however, records only the horizontal component of thewave movement, which is, in fact, much more complicated. If we could actuallysee the path described by a particle, such as a sand grain in the rock, it wouldbe more like that of a bluebottle buzzing round the room;
rɪˈkɔːdɪŋ ən ˈɜːθkweɪk
bʌt æz ðə ˈpeɪpə
muːvd frɒm saɪd tuː saɪd ˈʌndə ðə pɛn pɔɪnt, ɪts ˈmuːvmənt wʊd biː rɪˈkɔːdɪd ɪn
ɪŋk əˈpɒn ɪts ˈsɜːfɪs. ɪt wɒz əˈpɒn ðɪs ˈprɪnsəpᵊl ðæt ðə fɜːst ˈɪnstrəmənts wɜː
meɪd, bʌt ðə ˈpeɪpə wɒz ræpt raʊnd ə drʌm wɪʧ rəʊˈteɪtɪd ˈsləʊli. æz lɒŋ æz ɔːl
wɒz stɪl, ðə pɛn druː ə streɪt laɪn, bʌt waɪl ðə drʌm wɒz ˈbiːɪŋ ˈʃeɪkᵊn, ðə laɪn
ðæt ðə pɛn wɒz ˈdrɔːɪŋ ˈrɪɡᵊld frɒm saɪd tuː saɪd. ði ˌæpəˈreɪtəs ðʌs
dɪˈskraɪbd, haʊˈɛvə, ˈrɛkɔːdz ˈəʊnli ðə ˌhɒrɪˈzɒntᵊl kəmˈpəʊnənt ɒv ðə weɪv
ˈmuːvmənt, wɪʧ ɪz, ɪn fækt, mʌʧ mɔː ˈkɒmplɪkeɪtɪd. ɪf wiː kʊd ˈækʧuəli siː ðə pɑːθ dɪˈskraɪbd baɪ ə ˈpɑːtɪkᵊl, sʌʧ æz ə sænd ɡreɪn ɪn ðə rɒk, ɪt wʊd biː mɔː laɪk ðæt ɒv əˈbluːˌbɒtᵊl ˈbʌzɪŋ raʊnd ðə ruːm;
任务配置:L0 + L4
知识笔记:
单词:1、wrap:裹,包裹,包扎,2、drum:鼓,鼓声,铁桶,3、rotate:旋转,轮流,回转,4、wriggled:蠕动的,5、apparatus:仪器,设备,机器,6、thus:因此,因而,从而,7、component:成分,部件,原件,8、grain:粮食,颗粒,9、bluebottle:青蝇,10、buzzing:嗡嗡声
音标:
练习感悟:文章难度不大,但是今天应该是刚运动完回来吧,状态不好,录了四遍才达标。
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