Kitasamycin
北里霉素
🗣️ 情景例句
He never married because
他不结婚是因为
To know everything is to know nothing.
事事皆知，事事不懂。
She serves as an impressive reminder of the great ships of past.
它给人们留下深刻的印象，使人们回忆起历史上的巨型帆船，