《诗经·谷风》:“凡民有丧,匍匐救之。”郑笺:“匍匐,( )尽力也。”句中空内应填的古注术语是( )
Sometimes buyers only purchase some , tangible or intangible.
You can have eggs or hard-boiled.
Goods are carried by several of transport--on road or rail, by sea or air.
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
— May I suggest the sales start on or about October 1?
— .
Prices may change quickly if supply or demand .
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