zài / zhè / ge / guò / chéng / zhōng / ruǎn / gǔ / zhú / jiàn / gǔ / huà / biàn / de / gèng / jiā / jiān / yìng

在这个过程中，软骨逐渐骨化，变得更加坚硬。

During this process, the cartilage gradually ossifies and becomes harder.