微不足道的（形容词）

(adjective) Small and insignificant; not large enough to matter.

EXAMPLE: My rich but greedy brother only gives a few trifling gifts to members of our family during the holidays.

我的兄弟富有但是贪婪，在假日期间，只会给我们家人几样微不足道的礼物。

圆滑（成语）

(IDIOM) Describing someone or something that is very smooth and polished.

EXAMPLE: Our company抯 best sales representative is slick as a whistle and always knows the perfect way to encourage customers to buy plenty of our products.

我们公司最优秀的销售代表十分圆滑，总能知道鼓励客户大量购买我们产品的完美办法。