1. 乐于：be up in the air(问题等)悬而未决;不肯定;异常兴奋,十分激动 | be willing to乐于 | bed down安排过夜

2. be willing to

2. 愿意：13 be curious about...对...有好奇心 | 14 be willing to愿意 | 15 be confident in...对...有信心

3. 愿意,乐意做某事：Raise concern both nationally and internationally 引起国内外的关注 | 36. Be willing to 愿意,乐意做某事 | 37. Replace...with 代替

4. 愿意去做：with your hands a little open 手微微张开 | be willing to愿意去做...... | look sb. in the eye 正视/直视某人