zhè / tái / dǎ / gǔ / jī / suī / rán / yǒu / xiē / jiù / dàn / gōng / zuò / xiào / lǜ / réng / rán / hěn / gāo

这台打谷机虽然有些旧，但工作效率仍然很高。

Although this threshing machine is somewhat old, it is still highly efficient.