If you interject something, you say it and interrupt someone else who is speaking.
例句
'Surely there's something we can do?' interjected Palin...“我们一定可以做点儿什么吧？”佩林突然插话道。He listened thoughtfully, interjecting only the odd word.他仔细地听着,只是偶尔插句话。
英汉词典释义
vt.
(突然)插入,插话
I hate to interject a note of realism, but we don’t have any money to do any of this.我不想插话讲实际情况，但我们确实没钱做这些事。