求翻译：反应开始阶段，UP双键的转化率均高于苯乙烯双键的转换率，但随着反应时间的增加，ST双键的转化率迅速增大，且远远大于UP的转化率。是什么意思？

Response to the initial stage, UP double bond conversion were higher than the rate of conversion of styrene double bond, but with increased reaction time, ST double bond conversion rate increases rapidly, and the conversion rate is far greater than UP.

Double-click Start, UP reaction of styrene double-click conversion rate is higher than the conversion rate, but with the increase in response time ST double-type of rapidly increasing conversion rate, the conversion rate is far greater than UP.

The response initial stage, the UP duplet bond conversion rate is higher than the styrene duplet bond the transfer ratio, but along with the reaction time increase, the ST duplet bond conversion rate increases rapidly, also is bigger than UP by far the conversion rate.

Reaction at the start, UP double bond conversion rate than styrene double bond conversion rate, but with increasing reaction time, ST of double bond conversion rates grow quickly, and is much larger than UP conversion rates.

The response is at the beginning, the transformation efficiency of UP one pair of keys is higher than the conversion ratio of one pair of keys of styrene, but with the increase of the reaction time, the transformation efficiency of ST one pair of keys increases rapidly, and is far greater than the t