...》这门课，老师布置了项作业，让每人介绍一种技术或是产品，查了些文献发现一项很有趣的新技术----空中手书（write in the air），在这里做一简单介绍。
基于12个网页-相关网页
Please write about the effect of tree planting on air in a city.
请写写植树对城市空气的作用。
He wishes to write an article, which will attract public attention to the air pollution in this city.
他想写一篇文章， 以此来引起公众对这座城市空气污染的关注。（译成目的状语从句）
Morning exercises - air is a very good in the morning, use water to write words, both new and environmentally!
晨练——早上空气又好，用水当墨写字，既环保有新奇！
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