1.refer to 涉及；指的是

All employees will refer to each other by the honorific suffix "san".
所有雇員相互稱呼時都須在名字后添加敬語san（日語表示“先生”，“女士”）。

By way of illustration I'll refer to the behavior of rabbits.
我將舉例說明兔子的行為。

2.relate to 涉及；同…有…關系

Other recommendations relate to the details of how such data is stored.
其他建議涉及此類信息儲存方面的一些細節。

Afternoon groups relate to the specific addictions and problems therein.
下午的小組談到具體的上癮病例以及其中的問題。

3.even though 即使，縱然

I still love you even though I'd like to wring your neck.
雖然我想掐死你，但我還是愛你的。

Even though I'm quite a reserved person, I like meeting people.
我雖然性格極為內斂，但喜歡和人接觸。