Backstopping
支援（backstop的现在分词）
🗣️ 情景例句
But you just got here. Can't you stay a little longer?
可你刚刚到，再多呆一会儿，好吗？
Do not run too fast after gain.
不要见利就拼命追。
Of course. You may find these rather expensive.
当然。不过这些衣服你可能觉得相当贵。