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to restrict; to limit; to confine
to be restricted to; to be limited to; to be confined to
to be best (for); to be the best plan; to be the only way (to)
参加人数を二十人に限ります。
We will limit the number of participants to twenty.
暑い日にはやはりアイスに限る。
On a hot day, ice cream is the best.
時間が限られているので急ぎましょう。
Time is limited, so let's hurry.