In meteorology, an isotherm refers to a line on a map that indicates the same temperature.

Please turn on the power after checking the ground wire.

In this map, the longitude lines are clearly displayed.

My friend came from the Republic of Côte d'Ivoire.

He was hesitant to start a new business, but I encouraged him by saying, 'There is a danger of tragedy in any attempt.'

A black-necked swan was swimming in the park's pond.

As the name suggests, the black widow spider is a spider with a black body.

The black house spider has made a web in the corner of the house.

The black lemur lives in Madagascar.

The desert black cobra is a very dangerous snake, its venom is lethal to humans.