Andrographolic acid
[化] 穿心莲酸
🧩 词语组成解析
🗣️ 情景例句
Will you be so kind as to help me out of the difficulty?
帮助我克服困难，好吗？
Work today, for you know not how much you may be hindered tomorrow.
今天有事今天做，明天可能事受阻。
Don't you usually come to school by bike?
你不是常骑自行车到学校吗？