rain system的用法和樣例：
例句
- The rainwater harvesting system created by International Development Enterprises uses pipes to collect water from the roofs of buildings.
收獲雨水系統由國際發(fā)展企業(yè)創(chuàng )立，它用管子在建筑的房頂收集雨水。 - The inner rainwater system of large factory buildings is analyzed and discussed in this paper.And the personal opinion is put forward.
對大型廠(chǎng)房?jì)扰庞晁到y水流情況進(jìn)行分析，對系統設計進(jìn)行了探討，提出了個(gè)人的見(jiàn)解。
