Sewage nutrients do increase algal growth in the harbour.污水中的营养物确实会加快港口的海藻生长。I waved goodbye and went down the stone harbour steps.我挥手告别，然后走下港口石阶。The gigantic natural harbour of Poole is a haven for boats.巨型天然港普尔港是船只的避风港...
制备,保存用化学或物理方法制备 、 保存或润饰 ( 某物质 )To prepare , preserve, or finish ( a substance ) by a chemical or physical process.用化学或物理方法制备 、 保存或润饰 ( 某物质 ).To prepare, preserve, or finish ( a substance ) a chemical or physical process....