求翻译：原来的 Lesk 算法不会利用 语境, 这个贪心算法不会一直有效. 如果计算时间很 长, 我们将通过如 Beam 的局部搜索来优化词义组合.是什么意思？

Lesk algorithm will not use the context of the original, the greedy algorithm will not always effective. If the calculated time is long, we will adopt such as local search to optimize the combination of the meanings of the Beam.