Pulvis dentifricans
[医] 牙粉, 磨牙粉
🧩 词语组成解析
[化] 散剂\\n[医] 散剂, 粉剂
🗣️ 情景例句
Please give me a wake up call at 7:30 am tomorrow.
请在明早七点半叫醒我。
We only live once,, but if we work it right once is enough.
我们生命只一次，好自为之一次足矣。
It's a very old castle. It is the oldest one in Britain.
这个城堡很古老，它是英国最老的了。