This road is dangerous, so please be careful.

Please avoid this road because it's dangerous.

A pit viper is a dangerous snake with venom.

In the old days, people believed that seeing a viper would bring bad luck.

In this mountain, you must be careful of mamushi.

He was holding my hand tightly.

He was running while holding a bag.

He always carries an umbrella around.

This mushroom contains poison.

This apple contains poison.