It shows that the elapsed execution time for the query has improved dramatically, it now takes only 7 seconds to complete.
它显示查询的执行时间得到了显著改进，现在只花费了7秒。
Some interesting stats for you: the human short-term memory can only hold between 7-9 facts, and even those typically tend to decay after 30 seconds.
给你看一组有趣的数据：人类的短期记忆仅能支持7到9个事实，而就这几个事实可能在30秒以后也会从记忆中消失。
When it 7 springs up, a person loved and lost is found, if only for a few seconds.
记忆一旦涌现，已失去的挚爱之人就会出现在你面前，即便只有几秒钟。
Someinteresting stats for you: the human short-term memory can only hold between 7-9 facts, and even those typically tend to decay after 30 seconds.
给你看一组有趣的数据：人类的短期记忆仅能支持7到9个事实，而就这几个事实可能在30秒以后也会从记忆中消失。
Dyson noted that from 6:45 a. m. to about 7 a. m. , commuters only have approximately 45 seconds to cross legally.
戴森注意到从早上6：45到大约7点，上班族只有大约45秒的合法过马路时间。
Dyson noted that from 6:45 a. m. to about 7 a. m. , commuters only have approximately 45 seconds to cross legally.
戴森注意到从早上6：45到大约7点，上班族只有大约45秒的合法过马路时间。
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