like: freiwillig → →
freiwillig ☊ 
tự nguyện ☊ 
☊ freiwillig ☊ 自愿的 ☊ zì yuàn de admit (that)...: They freely admit (that) they still have a lot to learn. ☊ admit ☊
volunteers aged between 25 and 40 ☊ aged ☊
He persuaded a small band of volunteers to help. ☊ band ☊
Volunteers formed a human chain to rescue precious items from the burning house. ☊ chain ☊
Voluntary work was particularly important in view of the fact that women were often forced to give up paid work on marriage. ☊ fact ☊
I freely admit that I made a mistake. ☊ freely ☊
Both players freely acknowledge that money was a major incentive. ☊ freely ☊
There was no lack of volunteers. ☊ lack ☊
to work for a business/political/voluntary organization ☊ organization ☊
The agency is voluntary and not run for profit. ☊ profit ☊
The charity is run on a purely voluntary basis. ☊ purely ☊
Volunteer work gives her life (a sense of) purpose. ☊ purpose ☊
Volunteers were ready and waiting to pack the food in boxes. ☊ ready ☊
Volunteers provide regular help to give relief to carers. ☊ relief ☊
supply sb/sth: Local schools supply many of the volunteers. ☊ supply ☊
The staff have agreed to a voluntary wage freeze (= a situation in which wages are not increased for a time). ☊ wage ☊
They welcomed the new volunteers with open arms (= with enthusiasm). ☊ welcome ☊
willing helpers/volunteers ☊ willing ☊
I would never willingly upset you. ☊ willingly ☊
full-time/part-time/unpaid/voluntary work ☊ work ☊