これ以上ここでもたついてると、後ろの第二関門からも増援が来て、挟撃されるかも知れねーんだぜ。

If we hang around here any longer, there could be reinforcements coming from the second gate to take us in a pincer movement!

・・・言いたいことは色々あるのだが、ここで口を挟むのは野暮というもの。

There are things I'd like to say but to butt in now would be what they call uncouth.

奥歯に物の挟まった言い方をせず、ズバリ直球で言ってあげる事をお勧めします。

I recommend giving it to them straight, don't waffle your way around the subject.

彼は耳に鉛筆を挟んだ。

He stuck his pencil behind his ear.