Market demand is a stochastic variable which brings difficulty for most profit by ordering right goods.

市场需求量是一个随机变量，它给订货者追求最大利润，确定最优订货量带来了困难。

youdao

The break-even point is the sales volume at which the profit contribution has just covered the constant costs (variable costs having already been covered).

盈亏平衡点是指利润贡献被固定成本抵消(变动成本已被抵消)的销售量。

youdao

The ratio which is used to indicate a company's ability to control its variable costs refers to the ratio of operating profit to turnover in a given accounting period. It is expressed as a percentage.

用来反映公司控制其可变成本的能力，指会计帐期内当期营运利润占当期销售总额的比率，通常以百分比表示。

youdao

And the government is not averse to some sort of incentive scheme (ie, a variable profit).

ECONOMIST: Clottery

The proportion of workers on flexible hours has nearly doubled since 1991, to almost 30%, and two-thirds of all workers now earn some variable pay (bonus, profit share and so on).

ECONOMIST: To cut or not to cut

Make sure you take into account your variable costs to get to a gross profit and then fully allocate all of your fixed costs associated with that account.

FORBES: How To Raise Prices: Part 2