Not only are they incredible timesavers, the company has partnered with the Arbor Day Foundation to plant a tree for every app purchased.
这款应用不仅极其省时间，公司也与植树节基金会合作，每卖一份应用，就会值一棵树。
Afforestation is our obligation to every citizen, the state has special provisions in the day on March 12 for Arbor day.
植树造林是俺们每个公民的义务，国家还专门规定了在三月十二日这天为植树节。
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