I need a strong rubber to hold these papers together.
我需要一根粗橡皮筋把这些文件捆在一起。
I have rubber boots, good strong rubber boots-and I am not afraid.
我拥有一双胶靴，一双结实好穿的胶靴——我无所畏惧。
At that time every attempt to make rubber hard and strong came to nothing.
那时想把橡胶做得既硬又结实的尝试全失败了。
The wish of Goodyear to make rubber hard and strong came true at last.
古德伊尔要想增大橡胶硬度和强度的愿望最终实现了。
The wish of Goodyear to make rubber hard and strong came true at last.
古德伊尔要想增大橡胶硬度和强度的愿望最终实现了。
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