Adjustable retainer
[机] 可调整扣件
🧩 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;
🗣️ 情景例句
Get to the heart of the matter.
请讲问题的实质。
If you can be well without health you may be happy without virtue.
如果不健康而能强强壮壮，那么无美德也可快快乐乐。
No, look, it says Closed. It's not open this morning.
不对，看！写着“关门”的，今天早上不开。