Pentaether
五醚, 四甘醇二丁醚
🗣️ 情景例句
John Philip Sousa. John Philip Sousa
的曲子。
The operation was a success. She's now in recovery.
手术进行的很顺利，她正在恢复中。
Excuse me. Where's the toilet, please?
请问洗手间在哪？