We bade him farewell[goodbye].我们向他告别。She waved a farewell.她挥手告别。...a tearful farewell.含泪道别She bade farewell to her son.她和儿子道了别。She bade farewell to her son...她和儿子道了别。His farewell speech marked his exit from politics.他的告别...
Objective To observe the safety of diclofenac diethylamine salt gel after external use.目的观察双氯芬酸二乙胺盐凝胶经皮用药的安全性.The aminolignin flocculant was prepared based on calcium lignosulfonate, diethylamine and epichlorohydrin by a...