Spectinomycin is a kind of antibiotics with alkalescence and water - solubility . It is also called actinospectacin. 大观霉素(spectinomycin)又称奇放线菌素或壮观菌素(actinospectacin),是一种碱性 水溶性 抗生素.
"Very well," I said, adopting a crisp authoritative tone.“很好,”我用干脆的命令性的语气说道。The evidence she uses is usually highly authoritative.她采用的证据通常都具有很高的可信度。an authoritative tone of voice命令式的口气...