Methylcobalamin
甲基维生素B12
🗣️ 情景例句
She's enthusiastic about the new teaching method.
她对新的教学方法很热心。
Give a fool rope enough and he will hang himself.
授绳与愚，愚能自傅。
Good morning. What can I do for you?
早上好。你哪里不舒服？