Hence a careful analysis of semantic rules regarding each and every polysemantic word and, accordingly, a selection of disambiguation methods are crucial to English-Chinese machine translation.

• 要提高排歧效率就必须在深入研究语义变化一般规律的同时，研究每个多义词词义变化的特殊规律，选择何种排歧方法要因词而异，这样才能提高排歧效率。