zhè / tái / shōu / yīn / jī / lǐ / de / diàn / jīng / tǐ / yǐ / jīng / lǎo / huà / xū / yào / gēng / huàn

这台收音机里的电晶体已经老化，需要更换。

The transistor in this radio has deteriorated and needs to be replaced.