It happened when I was in Grade Four.

这件事发生在我四年级的时候。

youdao

I'm a pupil in Grade Four.

我是一个四年级的小学生。

youdao

I was then in Grade Four.

当时我四年级。

youdao

New lens elements and glass materials ensure the clearest possible imaging performance, and the proven dust and splashproof mechanism originally featured in the Four Thirds SHG (Super High Grade) series lenses is now incorporated for the first time in a Micro Four Thirds System lens.

ENGADGET: Olympus unveils a cavalcade of point and shoot cameras and a PEN lens at CES

She's even seen as much improvement as four grade levels in a year.

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On a recent day in Lopez's third-grade English class in Miami, the students learned the four points of the compass by reading and acting out a poem.

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