"With no trace" nghĩa là gì?

Steven Clark, then aged 23, vanished on a family walk after going to use a toilet near the pier in Saltburn, Cleveland. What happened to Steven has remained a mystery, with no trace or body ever found. Detectives reopened the case as a murder investigation earlier this year as there was no proof that Steven was alive.

Many universities had to conduct their exams online as they could not gather all students at a place for the exam but could not even postpone their exams. They found out that cheating and doping was easy with no trace found. Many even give others access to give exam on their behalf. 

Although the European wildcat (Felis silvestris) or forest cat was once very common, it fell victim to intensive hunting in the 19th and 20th centuries and to the massive deforestation (sự phá rừng rộng lớn) that cut back its natural habitat (môi trường sống tự nhiên), resulting in its disappearance in some parts of Europe. In Switzerland, the wildcat was deemed practically extinct (tuyệt chủng), with no trace found for 25 years from 1943 to 1968.

Bài trước: "With malice aforethought" nghĩa là gì?