There are four key problems now confronting the iron and steel industry which must be solved.
当前，钢铁工业重点要解决四个问题。
In a help session what he might do typically is solve between four and eight problems that illustrate the key principle being talked that week.
在帮助课程中他一般会，解决4到8个问题，来阐明那一周教的关键原理。
Because the environment question is global one of four major key problems, the Ministry of education soon integrates "environment education" nine year compulsory educations the required course.
由于环境问题是全球的四大重点问题之一，教育部即将把《环境教育》纳入九年义务教育的必修课。
The key problems involve four respects: supply , demand , realtor and intermediary of the house property, resources and environment protection;
其中面临的主要问题涉及供给、需求、房地产商和房产中介、资源和环保四个方面；
Secondly, it focuses on the design of algorithms steps of four key technical problems in the discrete manufacturing enterprise ERP system.
其次，重点阐述了离散型生产制造企业ERP四个关键技术难题的设计思想和算法步骤。
This paper focuses on characteristics and progress in research of four lane road tunnel. Some key technological problems to be studied are pointed out.
但由于四车道公路隧道的建设在国内尚处于起步阶段，有许多问题亟待研究。
This paper focuses on characteristics and progress in research of four lane road tunnel. Some key technological problems to be studied are pointed out.
但由于四车道公路隧道的建设在国内尚处于起步阶段，有许多问题亟待研究。
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