7—3 New Words
annual 作定语
happening every year
◆adj. ~ event, meeting, report, visit, show
◆n. book or periodical that is published once a year年刊,年报
migration
migrate from…to…
◆移居move from one place to go to live or work in another
◆迁徙 (of animals) go from one place to another with the seasons
The birds migrate to North Africa in winter.
migrant
adj.流动的,迁徙的 作定语
~ workers, ~ birds
migration
Uwitness
◆vt.
目击~ an accident/ a murder/a quarrel
◆C目击者 person who sees an event take place
~of/to
the accid ...


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