For example, in above translation, the phrase translation table may suggest the word three be translated into "三", "三本", "三只", etc, and the word books into "书", "书本", "名册" (scroll), etc.
due to the limited size of bilingual corpora, many measure words, as well as the collocations between a measure and its head word, cannot be well covered by the phrase translation table in an SMT system.