如何针对ng-repeat中的特定项目进行ng-show？

http://plnkr.co/edit/aiGCPJEwTj0RWnuoCjsW?p=preview

我希望删除按钮仅显示该项目的弹出窗口。

您将如何处理？HTML：

<li ng-repeat="acc in accounts">
    <div class="well well-sm">
        <div class="popover-remove" ng-show="popoverRemove">Click to remove item</div>
        <h4>{{acc.label}}</h4>
        <button class="btn btn-default"
                ng-mouseover="showPopover()"
                ng-mouseleave="hidePopover()">Remove</button>
    </div>
</li>

角度控制器：

    var app = angular.module('myApp', [])

.controller('AccountsCtrl',
    ['$scope',
    function($scope) {

    var vs = $scope;

        vs.accounts = [
            {
                id: '1',
                label: 'Bitage'
            },
            {
                id: '2',
                label: 'Blockchain.info'
            },
            {
                id: '3',
                label: 'Coinbase wallet'
            },
            {
                id: '4',
                label: 'Xapo wallet'
            }
        ];

        vs.showPopover = function() {
            vs.popoverRemove = true;
        };

        vs.hidePopover = function() {
            vs.popoverRemove = false;
        };

    }]);