1.The sentence consists of a main clause and a subordinate clause.

1.这中有和从。

2.Linguistic indices contain the ratio of error-free T-unit (REFT) and subordinate clauses per T-unit (SCT).

2.语言指标包误T-单位与全部T-单位之比(REFT)和全部从与全部T-单位之比(SCT)。