[liǎo jiě]
(知道得清楚) understand; comprehend; acquaintance
									
										understand the laws of development of things
										了解事物发展的规律
									
									
									
										A good teacher must understand children.
										一位优秀的教师必须了解儿童。
									
									
									
										If you can use a word correctly and effectively, you comprehend it.
										你如果能正确和有效地使用一个字, 你就了解它了。
									
									
									
										keep abreast of current development in science and technology at home and abroad
										了解国内外科学技术发展情况