angularjs遍历多维数组

<ul id="suggest_content_box">
    <li class="suggest_content_box_item"  ng-repeat="i in contents_s">
        <div class="col-md-1 col-sm-1 col-xs-4">
            <img class="touxiang_box" src="{{i.avatar}}" alt="头像">
        </div>
        <div class="col-md-11 col-sm-11 col-xs-8" style="padding:0;">
            <p class="createByName_p">{{i.createByName}}</p>
            <p class="createByName_id"><input class="id" type="hidden" value="{{i.id}}"></p>
            <p style="word-wrap: break-word;word-break:break-all;">{{i.textDetail}}</p>
            <p style="display:none;">{{i.suggestType_s}}</p>
            <p>{{i.createDate}}</p>
            <p><span onclick="del(this)">删除</span></p>
            <div class="xiTongHuiFu" ng-repeat="item in i.replyList" ng-if="i.replyList!=''">
                <hr style="margin:0.5rem 0;">
                <p class="text-right">系统回复</p>
                <p class="text-right">{{item.createBy}}</p>
                <p class="text-right huifu_id">{{item.id}}</p>
                <p class="text-right">{{item.textDetail}}</p>
                <p class="text-right">{{item.createDate}}</p>
            </div>
        </div>
        <div class="clear"></div>
    </li>
</ul>