Padds
[医][=photon-activated drug delivery system]光催化剂运载系统
🗣️ 情景例句
The only thing holding us back is our financial situation.
只是财政状况未许可，所以才拖延到现在。
Step after step the ladder is ascended.
按部就班，循序渐进。
What are you doing?
你在干什么？