Studying these will test the hypothesis that modern shells are more efficient than ancient ones, and thus out-competed them.
通过这些研究可以检验一种假设：即现代壳体要比古代壳体更为有效，从而用前者取代后者。
2
Wanting to out-design Giugiaro, the Italians, Robert Brunner of Apple’s Industrial Design Group/Lunar Design competed against the February 1990 people’s choice design (pictured directly above).