zhè / xiàng / jì / shù / jì / fāng / biàn / yòu / wēi / xiǎn / tǐ / xiàn / le / kē / jì / de / èr / chóng / xìng

这项技术既方便又危险，体现了科技的二重性。

This technology is both convenient and dangerous, reflecting the dual nature of technology.