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白紙， はくし， しらかみ
1. white paper, flyleaf
2. blank paper
3. clean slate, lack of prior opinion, positions, etc.
4. scratch, beginning
白皮书，扉页；空白纸张；全新起点，没有先入为主的观点、立场等；从头开始
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を
1. indicates direct object of action
2. indicates subject of causative expression
3. indicates an area traversed
4. indicates time (period) over which action takes place
5. indicates point of departure or separation of action
6. indicates object of d...
表示动作的直接对象；表示经过的场所；表示离开或分开的点
に
1. at (place, time), in, on, during
2. to (direction, state), toward, into
3. for (purpose)
4. because of (reason), for, with
5. by, from
6. as (i.e. in the role of)
7. per, in, for, a (e.g. "once a month")
8. and, in addition to
9. if, although
tbd