Anticaries
a. 防龋的
🗣️ 情景例句
Thanks.
谢谢。
The first step is the only difficulty.
万事起头难。
Once in a while sailors came down, Kunta thought, to carry sick men upstairs for treatment.
偶尔水手下来，孔塔猜想是把生病的人抬上去进行治疗。