1、Also, at all costs avoid the slouching shoulders or bad posture for that can ruin your picture.
此外，避免傴肩膀或其他一些不良姿勢。

2、We must arrive there at all costs before midnight.
我們無論如何要在午夜前趕到那兒。

3、Guard against this at all costs as it's very damaging to society as a whole.
我們要警惕這種行為，不惜一切代價，因為它嚴重危害著我們整個的社會。

at all costs翻譯