Instead of having the sphere within a bowl he created metal housing which kept the sphere rigid.
而不必在一个碗里球，他创造的金属外壳从而保持刚性球体。
2
Melt chocolate and butter in a metalbowl set over a saucepan of barely simmering water. Avoid stirring.
巧克力和黄油放在金属小碗中，置于平底锅中热水慢慢化开。避免搅动。
3
Turning away from the use of lenses, Newton devised the reflecting telescope, which makes use of a bowl-shaped metal mirror to focus the light from the stars.