Treadboard
n. 踏板
🗣️ 情景例句
She keeps all of her jewelry and valuables in a safe.
她把所有的首饰和贵重物品都放在保险柜里。
May I help you?
要我帮忙吗？
We invited them to our party but they decided not to come.
我们请了他们参加聚会，但他们决定不来。