like cats, babies appear to engage in what's called "preferential looking"—looking longer at things that are interesting or unusual than things they perceive as normal.
2018年12月四級真題（第三套）閱讀 Section C
英語六級真題
Congress needs to find the courage to allow Medicare to pay preferentially for treatments proven to be superior.
出自-2016年6月閱讀原文
柯林斯高階英漢雙解學習詞典釋義
ADJ-GRADED
優先的；優惠的；優待的
If you get preferential treatment, you are treated better than other people and therefore have an advantage over them.
"a discriminatory tax""preferential tariff rates""preferential treatment""a preferential shop gives priority or advantage to union members in hiring or promoting"