The education designed to meet the individual needs and interests of each student is effective , but , education only meeting the individual needs and interests is one - sided / unilateral , it will bring a narrow ken and an illogical knowledge structure to every individual and also an inharmonic development to the society 以满足个人需要和兴趣为出发的教育是有效的，但是单纯的这样的教育会使得受教者的视野变窄和知识结构不合理，是片面的；而且教育还应该满足社会对于个体的要求。
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The fourth chapter focuses on expounding the issues in the process of avoiding collision at the " crossing situation " , includes in analyzing the check for the validity and the inharmonic actions of avoiding collision between two vessels , so as to make the avoiding action more timely , accurate , integrated , and effective 第四篇主要论述交叉相遇局面避让过程中应注意的几点问题，包括避让行动有效性的查核和避让行动不协调性的分析，以使避碰行动能更及时、准确、完整和有效。
