Many lives are lost through ignorance.许多人由于无知而丧命。Thousands of people are failing to make the most of their pension investments, largely through ignorance.主要由于不知情，成千上万的人都未能充分利用他们的养老金投资。Some species have been wiped out through ignorance.有些物种由于人们的无知而灭绝了。