tracing contacts of people who tested positive helped reduce the time it took to isolate those who were infectious by nearly half. - V) N! w) W& ~5 H& F" J5 s5 V; F$ c6 K) C0 m4 ^4 c
主干：tracing contacts helped reduce the time by nearly half. 9 L, C% D0 L' U0 c8 _# P( p1 Dcontacts of people : people 是后置定语，修饰 contacts。3 y9 L+ P' p8 q3 Y
who tested positive : 定语从句，修饰 people。1 m) S) v( i D l$ s% H
(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. ( W$ |5 n0 \/ t/ j% _2 E. g& `% _$ N A Z7 n& i6 J' x, Z7 c; ^( z
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
