After the laser irradiation , the hair root sheath cells and matrix cells were damaged , then the follicle atrophy and the hair no longer regrows .

通过损伤毛根鞘细胞及毛母质细胞，最终达到毛囊萎缩，毛发不再生长。

Bamboo , says the sustainable woods network , based in oregon , is actually a grass rather than a wood . It regrows quickly with little cultivation .

可再生木材网上提到，竹子起源于俄勒冈[美国州名]，与其说它是木材不如称它为草，因为它生长迅速且几乎不需要养料。