Object: find out the oral health situation and oral hygiene behavior of pupils in Taiyuan City in order to provide reference for the education of oral health to them.

目的了解太原市中小学生口腔健康状况及口腔卫生行为，以便为进行中学生口腔健康教育提供参考。

youdao

In my days, they would say, "Find out when you want an object to go through that point."

我读书的时候,老师要求我,"求出物体何时经过该点"

耶鲁公开课 - 基础物理课程节选

Once you know those, you can find the position of the object at all future times.

只要知道了这些,你就能知道物体在任意时刻的位置

耶鲁公开课 - 基础物理课程节选

So if we differentiate this object, I'm gonna find a first order condition in a second.

想要求它的导数,先让我想想一阶条件

耶鲁公开课 - 博弈论课程节选

The lingering question, to which nobody seems to have a good answer, is why it took so long to find an object that ought to be fairly common.

ECONOMIST: The dizziest, giddiest stars

That means that an object under the stack - in the team's experiments, a block of wood about 10cm long - would not "hear" the sound, and any attempts to locate the object using sound waves would not find it.

BBC: Acoustic 'cloaking device' shields objects from sound

The chair, in response to some questions and complaints by the Democrats, and I must say I don't -- I find them with some substance to them, object to Mr. Schippers' remarks as a citizen.

CNN: Transcript: Schippers, Lowell briefings before Judiciary panel, part 2