tōng guò / fēn xī / shù mù / de / héng duàn miàn / kě yǐ / liǎo jiě / qí / shēng zhǎng / lì shǐ

通过分析树木的横断面，可以了解其生长历史。

By analyzing the cross-section of a tree, one can understand its growth history.