the invisible mixture of gases that surrounds the Earth

an atmosphere or environment characterized by a particular quality

वातावरण

English Usage: There was a mysterious air around the old mansion.

Hindi Usage: पुरानी हवेली के चारों ओर एक रहस्यमय वातावरण था।

to look for or seek out

to conduct a systematic investigation

अनुसंधान करना

English Usage: We need to search for new solutions to this problem.

Hindi Usage: हमें इस समस्या के लिए नए समाधान का अनुसंधान करना होगा।