zhè / tái / jīqì / jīngcháng / chū / máobìng / kàobuzhù / wǒmen / zuìhǎo / huàn / yī / tái / xīn / de

这台机器经常出毛病，靠不住，我们最好换一台新的。

This machine often breaks down and is unreliable; we'd better replace it with a new one.