义工的假期可以选择“绿色”的选项：外出不仅是做好事而是为地球母亲做些什么。
Volunteer vacations have a “green” offshoot: trips that aren't just about doing good but doing good for planet Earth.
尽管它被安装一个假期，我们是不是与通常的红色和绿色的色调的不堪重负。
Despite it being an installation for the holidays, we are not overwhelmed with the usual red and green hues.
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