dead tree

I observe them.

私は観察します

I observe the dead trees.

私は枯れ木を観察します

I observe the dead trees in the forest.

私は森で枯れ木を観察します

I observe the dead trees in the forest today.

私は今日森で枯れ木を観察します

I observe the dead trees in the forest with the researcher today.

私は研究員と今日森で枯れ木を観察します