When I switched this little marble for the heavier super ball.
把这个小弹珠换成这个重一些的弹力球就行了。
Super Ball
原声例句
我们这一天 第二季
老友记 season4
Yeah, there's this superintendent's dance, the super ball.
是的，有这个总监的舞蹈，超级舞会。
成长的烦恼 第1季
I ran tests to see how high a Super Ball would bounce.
至少我们知道如何定义科学的界限了。
英语百科
Super Ball
A Super Ball (a.k.a. SuperBall) is a toy based on a type of synthetic rubber invented in 1964 by chemist Norman Stingley. It is an extremely elastic ball made of Zectron which contains the synthetic polymer polybutadiene as well as hydrated silica, zinc oxide, stearic acid, and other ingredients. This compound is vulcanized with sulfur at a temperature of 165 degrees Celsius and formed at a pressure of 3,500psi. The resulting Super Ball has a very high coefficient of restitution, and dropped from shoulder level, a Super Ball snaps nearly all the way back; thrown down by an average adult, it can leap over a three-story building.
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