to testify in court
法廷で証言する (hōtei de shōgen suru)
"The witness will take the stand tomorrow morning."
"証人は明日の朝、法廷で証言する予定です。" (Shōnin wa asu no asa, hōtei de shōgen suru yotei desu.)
to protect your computer system or network from attacks
to talk about work or business during leisure time
to understand the larger or more important issue
to remain confident and strong during hardships
To try every possible way to achieve something.
To have a secret plan or idea.