1、Quantitative research uses numerical data, while qualitative research relies on observational data.
定量研究使用数值数据,而定性研究依赖于观察数据。
2、His study was purely observational, without any manipulation or intervention.
他的研究纯粹是基于观察的,没有任何干预或操控。
SHOW FULL COLUMNS FROM `tool_word` [ RunTime:0.001134s ]
SELECT `id`,`word`,`british`,`american`,`jbjs`,`wlsy`,`cx`,`lz` FROM `tool_word` WHERE `switch` = 1 AND `id` = 63545 LIMIT 1 [ RunTime:0.001137s ]
UPDATE `tool_word` SET `views` = `views` + 1 WHERE `id` = 63545 [ RunTime:0.001616s ]
SELECT `id`,`word` FROM `tool_word` WHERE `id` IN (47520,31909,80351,5193,52139,8231,15119,80056,11517,91605,15469,66292,41788,11417,43792,31322,32350,52883,40760,44429,23630,926,11257,20232,63027,74901,6835,87487,83796,81820) AND `switch` = 1 ORDER BY `id` DESC [ RunTime:0.002325s ]
SELECT `id`,`word` FROM `tool_word` WHERE `id` < 63545 AND `switch` = 1 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000363s ]
SELECT `id`,`word` FROM `tool_word` WHERE `id` > 63545 AND `switch` = 1 ORDER BY `id` LIMIT 1 [ RunTime:0.000624s ]