adj (too) serious; determined; not light-hearted （太）认真的; 坚决的; 不掉以轻心的
*a terribly earnest young man 认真得不得了的年轻人.
n (idm 习语) in (dead/deadly/real) `earnest
(a) with determination and energy 有决心和精力
*It's beginning to snow in earnest, ie heavily. 雪真的下起来了（下大了）.
(b) serious(ly); not joking(ly) 认真（地）; 并非开玩笑（地）
*When she threatened to report us, she was in dead earnest. 她威胁说要告发我们, 她可是郑重其事说的.
1 sum of money paid as an instalment or a deposit to show that full payment will be made later 定金; 保证金.
2 thing meant as a sign or promise of what will follow 预示; 承诺; 保证
*As an earnest of my good intentions I will work overtime this week. 我愿本周加班工作以示诚意.
1. Donor groups are now funding projects in Embu in earnest. 如今，捐助团体正式给恩布市的若干项目提供了资金。
2. Mary is an earnest worker. 玛丽是一个认真的工人。