 The experiments were tested on eight language pairs from ACL-WMT2011 including English-to-other (Spanish, French, German and Czech) and the inverse, and showed that LEPOR yielded higher system-level correlation with human judgments than several existing metrics such as BLEU, Meteor-1.3, TER, AMBER and MP4IBM1.An enhanced version of LEPOR metric, hLEPOR, is introduced in the paper.hLEPOR utilizes the harmonic mean to combine the sub-factors of the designed metric.