A.甲基红
B.溴甲酚绿
C.中性红
D.百里酚酞
第1题
A、提高,增进,增加(价值、质量、吸引力等) To enhance something means to improve its value, quality, or attractiveness.
B、to control or limit sth, especially sth bad 控制,抑制,限定,约束(不好的事物)
C、to make it difficult for sth to continue in the normal way 扰乱;使中断;打乱
D、if a feeling or an effect heightens, or sth heightens it, it becomes stronger or increases
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