It may have taken a year of training, with different shapes, sizes and colors of items, always in groups of one, two or three, but all that work paid off when it was time for higher math.

训练时每组图像都包含一个、两个或三个形状、大小、颜色各异的物品。这样的训练可能需要一年，但是等它们学习复杂点儿的数学时，就会发现这些付出是值得的。

youdao

It may have taken a year of training, with different shapes, sizes and colors of items, always in groups of one, two or three, but all that work paid off when it was time for higher math.

训练时每组图像都包含一个、两个或三个形状、大小、颜色各异的物品。这样的训练可能需要一年，但是等它们学习复杂点儿的数学时，就会发现这些付出是值得的。

youdao