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[医][=retained foreign body]残留异物
🗣️ 情景例句
If there's anything you need, just knock on my door.
有什么需要帮忙的话，尽管敲门来找我。
It is too late to shut the stalbe door when the steed is stolen.
失马锁厩，为时已晚；贼去关门，为时已迟。
Her eyes were fixed on her plate and in a short time, she was busy eating.
她的眼睛盯着自己的盘子，不一会儿就忙着吃起来了。