[jǐn guǎn]
（不必考虑别的） feel free to; not hesitate to
Just speak out.
你尽管直说。
You're welcome to it.
你尽管拿吧。
Don't hesitate to make comments or suggestions if you have any.
有意见尽管提好了。
Though the task was difficult, they managed to accomplish it in time.
尽管任务困难， 他们仍按时完成了。