In the WMT shared tasks, many new generation metrics, such as METEOR (Banerjee and Lavie, 2005), TER (Snover et al., 2006), and TESLA  have consistently outperformed BLEU as judged by the correlations with human judgments.
we note in Figure 2 that the trigram 买雨伞 and the bigram 买伞 are still unmatched, even though the match between 雨伞 and 伞 should imply the match between 买雨伞 and 买伞.