Backstopping
支援（backstop的现在分词）
🗣️ 情景例句
Why does the boss have such a large, comfortable chair?
为什么老板有张那么舒服宽大的椅子？
A man may dig his grave with his teeth.
祸从口出。
Yes. It's very different from Australia at this time of year.
对。这个时节这儿的天气与澳大利亚的大不相同。