调查 (diào chá): การสอบสวน; การไต่สวน; สอบสวน; สำรวจ; การสำรวจ; (ความคิดเห็น) โพล; สืบสวน; ตรวจสอบ; การสอบสวน; การไต่สวน; การสำรวจ; โพล

The police are investigating this traffic accident.

We conducted a market survey to understand consumer needs.

After investigation, doctors found that this disease is related to diet.

The school conducted a survey on students' sleep conditions.

According to the survey, most people support this new policy.

The police are investigating this theft case.

We conducted a market survey to understand consumer needs.

The survey results show that most people support this plan.

The teacher surveyed the students' opinions on extracurricular activities.