Retainer seal
[化] 护圈密封
🧩 词语组成解析
retainer
[ri'teinə]
n. [机]承盘，挡板;家臣，侍从;[牙科]牙架;保持着;
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
May I ask for a morning call tomorrow morning?
明天早上请叫我起床好吗？
This is a schedule.
这是一张时间表。
What are you going to give our art teacher for Teachers' Day?
教师节你打算送什么礼物给我们的美术老师？