加拿大科学家研制出一种新颖的高效率的植树工具—植树枪。这种枪重四公斤,它的“子弹”是一个顶端有孔、侧面有缝的塑料壳体,在“弹壳”内,装满了养分丰富的土壤和树种。等到树种发芽生长到了能移植时,便把“子弹”装入枪膛,并向土壤发射。用这种枪 Canadian scientists have developed a novel and efficient tree planting tool - tree planting gun. The gun weighs four kilos and its “bullet” is a perforated, seamed plastic shell with side seams filled with nutrient-rich soil and tree species in the “shell”. When the tree sprout grows to be transplanted, the “bullet” is loaded into the chamber and launched into the soil. Use this gun