例句與造句

1. In the 1950s dendrochronologists were making active efforts to find the oldest living tree species in order to use the analysis of the rings for various research purposes, such as the evaluation of former climates, the dating of archaeological ruins, and addressing the basic scientific question of maximum potential lifespan.
2. It's difficult to find maximum potential lifespan in a sentence. 用maximum potential lifespan造句挺難的