A more thorough explanation:

Definition: To appear means to show up or make an appearance at a trial or court hearing. This can be done in person or virtually, depending on the court's rules and technology available.

Example: John had to appear in court to testify as a witness in the trial.

Explanation: In this example, John was required to physically show up at the court to give his testimony. This is an example of appearing in person.

Example: Due to the pandemic, the court allowed witnesses to appear virtually via video conference.

Explanation: In this example, the court allowed witnesses to make an appearance through a video conference instead of physically showing up in court. This is an example of appearing virtually.