Phenylbiphenylyl oxadiazole (pbd)
[化] 苯基联苯基┭二唑
🗣️ 情景例句
The cassette player and the tapes.
卡式录音机和录音带。
Are your neighbors vey friendly?
你的邻居友好吗？
Yes, they're our new reading books. Is the box too heavy?
对，这些是我们的新教科书，这个箱子重吗？