With a purposeful or sincere intent
正经的：带有认真或坚定的目的的
settled down to study in earnest for the examination.
坚定决心认真坐下来复习准备考试
Serious; determined
坚定不移的；严肃的
“Both sides are deeply in earnest, with passions that approximate those of civil war”(&b{Conor Cruise O'Brien})
“双方都很坚决认真，象是鼓足劲要打一场内战”(&b{康纳·克鲁斯·奥布赖恩})