Backfiller
[机] 回填机
🗣️ 情景例句
Good evening, how may I help you sir?
晚上好，你需要帮助吗？
What will you do to help protect our environment from being seriously polluted?
你将为帮助保护我们的环境免遭到污染做些什么呢？
Oh yes, put them here.
可以，放吧！