His project reflects his ingenuity.

It is important for men to regularly clean smegma.

The treatment efficacy of this medicine is very high.

I'm always impressed by his skillful handiwork.

Geologists believe that this area was formed by a graben.

The precipitation in this area is 500 millimeters on average annually.

Due to this chemical reaction, the substance will precipitate.

I went to see a movie with my friend.

We need to unite in order to overcome difficulties.

Yuki is my best friend.