全民义务植树要常抓不懈──纪念全民义务植树十五周年本刊评论员再有五个年头，我们就要跨入二十一世纪。在这世纪之交的历史时期，全球人类关心的最大问题是什么？除了战争与和平这个永恒的主题外，最要紧的莫过于生存环境。下个世纪，我们的唯一家园──地球，能否继续... Volunteer tree planting should always be perseverance ─ ─ In commemoration of the fifteenth anniversary of the volunteer tree planting commentators another five years, we will enter the twenty-first century. What is the biggest concern of humankind in the world at this turn of the century? Except for the eternal theme of war and peace, the most important thing is the living environment. The next century, our only homeland ─ ─ Earth, can continue ...