繁重的（形容词）

(adjective) Describing something that causes significant, troublesome and unpleasant obligations; burdensome.

EXAMPLE: Every year I dread the onerous task of preparing my taxes.

每年，我都害怕繁重的报税工作。

目标营销（营销术语）

(MARKETING) A strategy in which a group of potential customers are identified, studied, and then approached with promotions designed specifically to interest them in making purchases.

EXAMPLE: Our company wasted a lot of money on advertising until we adopted a target marketing approach to advertise our projects only to the kind of people who buy them, rather than to the general public.

我们公司做广告白花了很多钱，直到我们采取了目标营销方式，只向购买我们项目的人做宣传，不再面向普通民众。