What amazes people most is that it keeps pace with the country's development while respecting history and tradition.

keep 是动词，意思是"保持、维持"。 pace 是名词，意思是"步伐、速度"，指运动或发展的节奏。 with 是介词，表示"与...一起"或"伴随"。 keep pace with 是一个固定短语，字面意思是"保持与...相同的步伐"，引申为"与...同步发展"或"跟上...的步伐"。