この台の上に花瓶を置いてはいけません。
Please don't place a vase on this stand.
2台のオートバイを比較するべきだ。
You should compare the two motorcycles.
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Context: だい (だい)
Current word
だいだい
is it?; isn't it?; be; is
Ask anything about Japanese grammar, usage, or nuance.