无错误

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

语言指标包括无错误T-单位与全部T-单位之比(REFT)和全部从句与全部T-单位之比(SCT)。

Please note that it is perfectly acceptable to have a Pembroke Welsh Corgi that is black and tan with no white, but a Pembroke Welsh Corgi that is black and white with no tan present is a mismark.

请注意它是PWC,它有黑色和褐色无白色，但是PWC这又黑色和白色无褐色是错误标记。