tracing contacts of people who tested positive helped reduce the time it took to isolate those who were infectious by nearly half. & Z) n$ u) T% U% j! i* ~2 c/ N # J+ Z2 B) m9 S9 u' ]) m4 @" a( V$ I主干：tracing contacts helped reduce the time by nearly half.2 ]7 F' ^$ B5 e* E3 M
contacts of people : people 是后置定语，修饰 contacts。 + y- `- n# Q5 ?" W1 |who tested positive : 定语从句，修饰 people。 : C/ l. r" j% x" u! Q% g(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.. o8 E, H n8 m! G
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
