voluntarily of one's own accord

One of the rebels showed up voluntarily in The Hague this week—itself a first—for a confirmation of charges that relate to an attack on African Union peacekeepers in Sudan’s western region of Darfur.

本周，在海牙法院，叛乱分子之一第一次自愿出庭——目的是为一项指控作证——袭击非盟驻苏丹西部达尔富尔地区维和人员案。

One day, in a hall of public place, a man came up to me, he introduced him self voluntarily, he said to me: I know you, I remember you forever.

有一天，在一处公共场所的大厅里，一个男人向我走来，他主动介绍自己，他对我说：“我认识你，我永远记得你。”

One must be a volunteer voluntarily, permitted by the environment of family and work. Be willing, don't be forced.

做义工，一定要自愿，在家庭工作条件容许的条件下，自愿来做，不能勉强。