second class 二等, 二流
second class[ noun ]- not the highest rank in a classification
<noun.state>
- not the highest quality in a classification
<noun.attribute>
- a class of accommodations on a ship or train or plane that are less expensive than first class accommodations
<noun.artifact>
[ adv ]- by second class conveyance
<adv.all>
we traveled second class
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