英语语法分析

The sidewalk was dotted with eggshells.

人行道上到处都是鸡蛋壳。

DDT prevented eagle eggshells from thickening.

DDT 会阻止鹰蛋壳变厚。

Those dinosaurs on the nests were probably adult males who wouldn't have needed calcium for making eggshells.

巢里的那些恐龙可能是成年雄性，不会需要用来制造蛋壳的钙。