Grafting can join scions with desirable qualities to rootstock that is strong and and insects.嫁接可以使品质优良的接穗接在生命力强而且抗病虫害的砧木上.The aminolignin flocculant was prepared based on calcium lignosulfonate, diethylamine and epichlo...
He was smiling, but his eyes retained a look of solemnity.他脸上挂着笑容，但眼神依旧严肃。The monument was unveiled with great solemnity.纪念碑的揭幕庄严而肃穆.The setting for this morning's signing ceremony matched the solemnity of the occas...