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
She has the ability to speak English fluently.
她能够流利地说英语。
She was so stunned, that she couldn't speak.
她惊愕得说不出话来。
Don't try to get up. You shouldn't get up if you're badly hurt.
别起来。受了重伤，你不该起来的。