although

• 虽然如此，可是也不那么简单。

  Although this is true it's not that simple.

• 他虽然知道，但是不说。

  He knows but he is not saying.

• 虽然大家都反对，可是他还是照自己的意思做了。

  Although everybody was opposed he still did it his own way.

• 好虽然好，但只是...。

  It is good but it is just that.

• 他虽然精力足，但一个人怎么也办不了。

  Although he has the strength and energy one person just cannot do it.