Backstopping
支援（backstop的现在分词）
🗣️ 情景例句
I just love mashed potato.
我就是喜欢土豆泥。
She won't be in until 10:45, so the earliest would be 11:00.
她要到10:45才来，所以最早也得到11点才能看。
What are your plans for the weekend?
你周末计划做什么？