Formycin
間型霉素
??? 情景例句
Fall is a great season because of all the wonderful colors.
秋天是個色彩繽紛的好季節。
My first name is Bill.
我的名字叫比爾。
The best time to come to China is in spring or autumn.
到中國來，最好的時間是在春天或者秋天。