It will iterate over each element of the idx sequence, evaluate the expression, and add the result to the return sequence.
它将迭代id x序列中的每个元素，求得表达式的值，并将结果添加到这个返回序列。
3
QuantaDyn selected Independence IDX 4000 Image Generators (IG) from Quantum3D to update the U.S. Air Force\'s KC-135 Boom Operator Weapons System Trainer (BOWST).