wèi le / tí gāo / xiào lǜ / tā men / jué dìng / shuāng guǎn qí xià / tóng shí / tuī jìn / liǎng gè / xiàng mù

为了提高效率，他们决定双管齐下，同时推进两个项目。

To improve efficiency, they decided to take a two-pronged approach and advance two projects simultaneously.