Nobody knows how old the oldest living Coast Redwoods are because nobody has ever drilled into any of them to count their annual growth rings, and, in any case, the centers of the oldest individuals appear to be hollow.
最も古くから生きているセコイアの樹齢は誰も知りません 幹に穴をあけて年輪を数えた人は いないのですから　いずれにしても 古いセコイアの中心は空洞だと言われています