换句话

zhè yàng xiāng dāng wēi xiǎn huò zhě huàn jù huà shuō bié shì zhe zài jiā li zhè me zuò

这样相当危险，或者换句话说，别试着在家里这么做。

It's fairly risky. Or to put it another way (=say it in different words), don't try this at home.