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JavaScript i am feeling hard to understand logic of this code

KISHOR 1988

New Coder
JavaScript:
const inventory = {
  sunglasses: 0,
  pants: 1088,
  bags: 1344
};
const order = [['sunglasses', 1], ['bags', 2]];
let inStock = order.every(item => inventory[item[0]] >= item[1]);


i am beginner so please explain line number 7 that contains ---- item => inventory[item[0]] >= item[1]------what is the value of "item" on every step and how it works??? please break down line number 7 and "item" . i spent two hours for break down but i cant. i also try debugger but i cant understand.
 

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