But a new biodegradable protein solution able to stanch bleeding in mere seconds appears to also be nontoxic and long-lasting in animals.是什么意思_But a new biodegradable protein solution able to stanch bleeding in mere seconds appears to also be nontoxic and long-lasting in animals.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句