/// <summary>
/// 判断背包中的物品是否满足合成规则的需求
/// </summary>
/// <param name="expressionId"></param>
/// <returns></returns>
public bool ExpressionAvailable(int expressionId)
{
var expression = GetExpression(expressionId);
return(expression.Input.All(item => _Package.GetItemNum(item.Id) >= item.Count));
}