移行期間 移行期間 いこうきかん period of transition (e.g. from old to new system)
例文
Russsia , however , did not withdraw its troops even after the promised deadline had passed; on the contrary , it planned to reinforce its occupation . ところがロシアは履行期限を過ぎても撤退を行わず駐留軍の増強を図った。