Stepwise seal
[化] 台阶式密封
🧩 词语组成解析
a. 楼梯式的, 逐步的
seal
[sil]
n. 密封;印章;海豹;封条;
v. 密封;盖章;决定;封上（信封）;
🗣️ 情景例句
There is still a week to go before the vacation begins.
现在距离假期还有一星期。
Yes. And another thing, would you mind not making long distance calls?
是的。还有一件事，请你别打长途电话了，好吗？
Neither you nor he is wrong.
你没错，他也没错。