要控制灌溉水的入渗深度,尽量减少水分下渗损失, 节约用水,保护环境.It is requirement of controlling irrigation water depth, lessen down water losing.大部分电池中含有汞, 进入土壤或下渗到地下水中, 污染环境,危害人类.Most of batteries containing mercury, Infiltration into the soil or g...
她的声音如少女般柔美悦耳。Her voice was as soft and sweet as a young girl's.他的歌旋律优美、悦耳动听，让我潸然泪下。Wonderfully melodic and tuneful, his songs have made me weep.从小到大，生活在我周围的人都有着悦耳动听的嗓音。I grew up around people who had wonderful, mell...