Black Friday: lifetime access is on a special offer in the app, until November 30. Black Friday: special offer on lifetime access, until November 30. Download
측수기를 사용하여 나무의 성장 속도를 측정했습니다.cheugsugireul sayonghayeo namuui seongjang sokdoreul cheugjeonghaessseubnida.I used a dendrometer to measure the growth rate of the tree.