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1. scavenge verb
原句: College students scavenging for affordable textbooks are beginning to realize that they have something in common with airline passengers.
意思:
a. ( of a person, an animal or a bird ) to search through waste for things that can be used or eaten
b. ( of animals or birds ) to eat dead animals that have been killed by another animal, by a car, etc
字源: mid 17th cent. (in the sense ‘clean out (dirt)’): back-formation from scavenger.
例句:
a. Much of their furniture was scavenged from other people's garbage.
b. Some fish scavenge on dead fish in the wild.
2. escalate verb
原句: Students have relied on used copies and online purchases for relif from escalating textbook costs.
意思: to become or make sth greater, worse, more serious, etc
字源: 1920s (in the sense ‘travel on an escalator’): back-formation from escalator.
例句: The fighting escalated into a full-scale war.
3. rein in phrase
原句: The rental boom is fueled by pressure from Congress to rein in textbook costs.
意思: to start to control sb/sth more strictly
字源: Middle English: from Old French rene, based on Latin retinere ‘retain’.
例句: She kept her emotions tightly reined in.
4. mandate verb
原句: And mandates that colleges include textbook costs in Internet course schedules.
意思: to order sb to behave, do sth or vote in a particular way
字源: early 16th cent.: from Latin mandatum ‘something commanded’, neuter past participle of mandare, from manus ‘hand’ + dare ‘give’. Senses 1 and 2 of the noun have been influenced by French mandat.
例句: The law mandates that imported goods be identified as such.
5. dampen verb
原句: Which may dampen proffessors' tendency to order the latest.
意思:
a. to make sth slightly wet
b. to make sth such as a feeling or a reaction less strong
例句:
a. Perspiration dampened her face and neck.
b. She wasn't going to let anything dampen her spirits today.