求翻译：我国造船业与国外的竞争优势是成本较低，随着原材料及劳动力成本的不断上升，优势越来越不明显，因此有必要寻找新的改进方向。是什么意思？

China's shipbuilding industry competitive advantage with foreign low cost, with raw materials and labor costs rising, more and more obvious advantages, it is necessary to find a new direction for improvement.

China's shipbuilding industry abroad with the competitive advantage, low-cost, with the rising raw material and labor costs less and less obvious advantages, and therefore there was a need to find new directions for improvement.

Our country ship-building industry and the overseas competitive advantage are the cost are low, along with raw material and the labor force cost unceasing rise, the superiority is not more and more obvious, therefore has the necessity to seek the new improvement direction.

China's shipbuilding industry and is a lower-cost foreign competition advantage, with the rising raw material and labor costs, advantage became less and less clear that it was necessary to search for a new improvement.

China's shipbuilding industry and is a lower-cost foreign competition advantage, with the rising raw material and labor costs, advantage became less and less clear that it was necessary to search for a new improvement.