我有两个助手协助经营。I have two assistants who help with the admin.他上一季在协助英吉利海峡隧道的电缆铺设工作.He was helping wire up the Channel Tunnel last season.他协助招募志愿者到巴基斯坦打仗。He helped to recruit volunteers to go to Pakistan to fight....
Please describe the characteristics of hydroponic and front views of marketing.试论述水培花卉的特点?你对其市场前景有何看法?Nickel ( Ni ) absorption and accumulation in tea plants were studied by hydroponic and pot experiments.通过盆栽和水培试验,研究了镍元...