我再三提醒他注意安全。
wǒ zàisān tíxǐng tā zhùyì ānquán 。
I reminded him to pay attention to safety again and again.
她再三考虑后决定了。
tā zàisān kǎolǜ hòu juédìng le 。
She made a decision after considering it over and over again.
老师再三强调这个习题的重要性。
lǎoshī zàisān qiángdiào zhègè xítí de zhòngyàoxìng 。
The teacher emphasized the importance of this exercise repeatedly.