target rectangle meaning in English

目标矩形

A game context was provided to children in which three rectangles , which indicated a box full of black and white toy bricks , was presented on the test paper . at the same time one another rectangle , which indicated picture of a box full of black and white toy bricks , was presented on a large wall map . the black area in all of these rectangles was given a corresponding rate and the children were required to choose one rectangle in three options to match the rate with target rectangle
实验提供给儿童一个游戏情境，在测验纸上呈现三个被指示为“装满黑色积木和白色积木的盒子”的长方形，同时用挂图呈现一个被指示为“盒子照片”的长方形，其中的黑色部分都对应一个比例，要求儿童在三个选项中选择一个和目标图形比例相匹配的图形。