be of one’s free will; of one’s own accord; willingly and gladly ❍ 他便死也～。(《关汉卿戏剧集·包待制三勘蝴蝶梦》77) He will die content. ❍ 你们逼我们来，怎么是我们～的呢？(《高玉宝》61) You forced us to come here.How can you say we came of our own accord?/但这还不够，还必须使全国广大人民群众觉悟，～和我们一起奋斗，去争取胜利。(《毛泽东选集》1001) But this is not enough;we must also arouse the political con sciousness of the entire people so that they may willingly and gladly fight together with us for victory.
甘心情愿
willingly and gladly 他～放弃职务。He willingly and gladly gave up his post.
甘心情愿心甘情愿ɡān xīn qínɡ yuàn
甘：甜，引申为情愿，乐意。打心眼里愿意。willingly and gladly, gladly, perfectly willing