Nbr
abbr. 腈基丁二烯橡胶（nitrile -butadiene rubber）
🗣️ 情景例句
Is that a proposal, or are we just playing a game?
这是求婚呢 ，还是仅仅在玩游戏？
What's the quickest way to get there?
到那里的最快方法是什么？
She gave her luggage to a porter and showed him her ticket.
她把行李交给搬运工并给他看了车票。