The oil prices drifted slightly higher presently.是什么意思？

The oil prices drifted slightly higher presently.

目前石油价格略有上涨。

the

art. 指已提到的人（物），指说话人与听者已知的人（物），用于独一无二的事物前，与形容词最高级和序数词连用；

例句
He did have a real knowledge of the country...
他对该国的确知之甚多。

oil

n. 油，石油，油画，燃油；vt. 给…加油；vi. 化成油；

例句
Several magnificent oil paintings adorn the walls.
几幅恢宏的油画装点着墙面。

Prices

n. 价格，价钱( price的名词复数 )，代价，行市；

例句
The arts should be available to more people at prices they can afford...
艺术品应该以人们能够承受的价格面向更多的人出售。

drifted

v. 漂( drift的过去式和过去分词 )，吹积，漂泊，浮现；

例句
A smell of bread drifted from some distant bakery.
一阵面包的香味从远处的面包房飘来。

slightly

adv. 轻微地，轻轻地，细长地，苗条地，〈罕〉轻蔑地，粗；

例句
On first acquaintance she is cool and slightly distant.
初次相见时她表现冷淡并有点爱搭不理。

higher

adj. 高高的，高级的，上级的，高等的，高的( high的比较级 )，高尚的，高地的，高级的；

例句
Officials admit the actual number of AIDS victims is much higher than statistics reflect.
官员们承认艾滋病患者的实际数量比统计所显示的数字要大得多。

presently

adv. 目前，不久，马上；

例句
All went well at first, and I was in high favour; but presently I fell from grace...
我最初一帆风顺，备受器重，但现在却失宠了。