Backstopping
支援（backstop的现在分词）
🗣️ 情景例句
I'm happy to have this chance to meet with you. Mr. Howard Yang.
杨先生，非常高兴能有机会认识你。
Very please to meet you.
见到您很高兴。
When she reached home, her mother asked:Have you got everything?
“你东西买齐了吗？”