tracing contacts of people who tested positive helped reduce the time it took to isolate those who were infectious by nearly half.1 F5 K2 H/ m& M
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主干：tracing contacts helped reduce the time by nearly half. ' O1 s$ L& c8 L5 x& D( Scontacts of people : people 是后置定语，修饰 contacts。 , y7 z! |5 G7 S$ A. a5 Bwho tested positive : 定语从句，修饰 people。! a, L" R8 Z; {2 y5 B" W$ ^
(that) it took to isolate those who were infectious : 定语从句，修饰 time。这句中的 "who were infectious" 也是一个定语从句，修饰 those. & g0 z4 f+ Q. B/ w2 Y7 O8 ]) R% N7 R. w# ]
跟踪检测阳性群体的(密切)接触者，对及时隔离传染者，可以起到事半功倍的效果。 'tracing contacts of people who tested positive' helped (to) reduce 'by nearly half' the time it took to isolate those who were infectious.
发表于 2020-5-6 23:13:09
