take out: 取出
Check your car insurance to see if you need to take out extra insurance while renting a car.
当你要租车的时候，检查下你的汽车保险是否需要购买额外的保险。
Instead, these initiatives help to control the trafficking by helping officials take out rivals.
然而，这些有助于控制走私的措施给官员除掉竞争者帮了忙。

red flag: 【比喻】惹人生气的事物
This raises a giant red flag.
这一点会引起人们的高度警惕。
Okay, red flag! See, I didn't go to medical school, but I am thinking, not all the same.
好了，别说了！你知道我没去过医学院上课，可我在想-- 不是都一样的吧！