中文 Chinese
溯源
溯源
英文 English Explain:
to investigate the origin of sth
to trace a river upstream back to its source
溯源 溯源 English Pronunciation:
[su4 yuan2]
溱 溱
溲 溲
溳 涢
溴化氰 溴化氰
溴化鉀 溴化钾
溴單質 溴单质