What is the translation of " 他研究了 " in English?

• he studied
• he examined
• he investigated
• he researched
• he studies
• he examines
• he explored
• he analyzed

Examples of using 他研究了 in Chinese and their translations into English

他研究了图像。
He examined the picture.

在哈佛期间，他研究了择校政策。
While at Harvard, he researched school choice policy.

然后他研究了下游土地。
He explored the land below.

所以他研究了国家关于葬礼的法律。
So he researched the country's law governing funerals.

他研究了他的香烟。
He studies his cigarette.

他研究了房间。
He studies the room.

他研究了经济政策的行为基础。
He studies the behavioral underpinnings of economic policy.

他研究了社会形象和社会比较如何影响经济行为。
He studies how social image and social comparisons shape economic behavior.

他研究了这张照片。
He studies the photo.

他研究了她的脚。
He studies his feet.

他研究了预言。
He studies the prophecies.

他研究了它们。
But he studies them.

他研究了我的脸。
Then he studies my face.

他研究了老人几秒钟。
He studies the man for a few moments.

他研究了地图。
He studies the map.

他研究了图像。
He studies the picture.

他研究了钥匙。
He studies the key.

他研究了这两个人的脸。
The judge studied the two men's faces.

在其学术生涯后期，他研究了优化控制理论。
Later in his career he worked in optimal control theory.

他研究了预言。
They had studied prophecy.

他研究了我的脸。
He is studying my face.

他研究了在晚上,计划。
She studied by night, planned by day.

他研究了同采掘业引发暴力有关的情况。
He had examined situations related to extractive industries that had erupted into violence.

他研究了档案。
She studied the files.

他研究了他们。
He has studied them.

他研究了这个课题。
They studied this topic.

他研究了一大群门现在在他身后滑动关闭。
He studied that great set of doors now sliding shut behind him.

他研究了周围的景色。
She studied the view around.

他研究了预言。
He tested the prophecy.

他研究了钥匙。
She examined the key.