Jiang is my best friend.

He helped me out.

We need support services for Japanese people living abroad.

I drew a line from the center of the circle.

He has inflammation in his foot.

When you use that distal demonstrative, it indicates that what the speaker is pointing to is far away.

This laboratory has the latest centrifuge.

My car has stalled and I'm in trouble.

I separated the sample using a centrifuge.

I asked the teacher for a postponement of the exam.