Cyanouracil
氰基尿嘧啶
🗣️ 情景例句
Tell him to come and see me
告诉他来见我，
My sister is the oldest.
我的姐姐是最大。
She heard the front door open and heavy footsteps in the hall.
她听见前门被打开，走廊里响起重重的脚步声。