尽管

In a sentence

• 尽管天很冷，他还是坚持晨跑。

  Although it was very cold, he still persisted in jogging in the morning.

  In this sentence, '尽管' is used as a conjunction meaning 'although' to introduce a concessive clause.

• 你尽管放心，我会帮你处理好这件事情的。

  You can rest assured, I will handle this matter for you.

  Here, '尽管' conveys an assurance or permission, equivalent to 'feel free to' or 'you can'.

• 尽管他刚开始学习汉语，他的进步已经很显著了。

  Even though he just started learning Chinese, his progress has already been remarkable.

  This instance of '尽管' again acts as a conjunction, introducing a clause expressing a circumstance that counters expectations.