Collins Chinese Dictionary Plus (3rd edition), 2011:
固然 gùrán 连
1
(=虽然) admittedly
- 这(這)样(樣)办(辦)固然可以,但就是需要时(時)间(間)。 Zhèyàng bàn gùrán kěyǐ,dàn jiùshì xūyào shíjiān. Admittedly, you can do this but it will take time.
2
(=的确) no doubt
- 事业固然重要,但家庭也不可忽视(視)。 Shìyè gùrán zhòngyào,dàn jiātíng yě bùkě hūshì. There's no doubt that work is important, but you can't neglect your family over it.