Rarely, ectropion is present at birth, (congenital) .

先天性眼睑外翻比较罕见。

This is a " resting tremor, " meaning it is present at rest and diminishes with intentional movement.

这是一种“静止性震颤”，意味着它在静止时发生，做意向动作时减弱。

Lindsey is presenting his work this week at the fall meeting of the American Geophysical Union in New Orleans.

林赛本周将在新奥尔良举行的美国地球物理联盟秋季会议上报告他的研究成果。

The id, according to Freud, is present at birth.

根据弗洛伊德的说法，本我在出生时就存在。

Researchers believe that the tendency for diabetes is present at birth.

【tendency】研究人员认为糖尿病倾向出生时就存在。

A " study, " you know already, is an investigation into something, often something that is presented at a conference or published in a magazine – scientific magazine.

“研究” ，你已经知道， 是对某事的调查，通常是在会议上展示或发表在杂志——科学杂志上的东西。

It is present at significant occasions: as I received my name, it was there at my wedding, and tonight it is here, witnessing me speaking to all of you.

它出现在重要的场合：当我收到我的名字时，它在我的婚礼上就在那里，而今晚它就在这里，见证我对你们所有人的讲话。