increment borers
A lake of asphalt formed when subterranean bitumen leaks to the ground surface.
The fifteenth letter of the English alphabet, called o and written in the Latin script.
imitation crape made from cotton
plural of increment borer
森林研究チームは、樹木の年齢を調べるために樹木年輪のコアを採取する年輪採取器を数本持参した。
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