This forest is full of thickly grown vegetation.

The character '彌' is the Kyūjitai form of the modern '弥'.

He cut the apple.

He rejoiced when he heard about the success.

He is interested in ichthyological research.

Knock-knock, someone is knocking on the door.

Thinking sensibly, that plan will not succeed.

He has astronomical knowledge.

He fell while skiing and broke his rib.

His success was an inevitable result.