VOA慢速英语:30 Phrasal Verbs to Help You With Technology

preposition – grammar. a word or group of words that is used with a noun, pronoun, or noun phrase to show direction, location, or time, or to introduce an object

adverb – grammar. a word that describes a verb, an adjective, another adverb, or a sentence and that is often used to show time, manner, place, or degree

informal – adj. (of language) relaxed in tone; not suited for serious or official speech and writing

cable – n. a group of wires, glass fibers, etc., covered in plastic or rubber and used to carry electricity or electrical signal

upgrade – n. an occurrence in which one thing is replaced by something better, newer, more valuable, etc.

browser – n. a computer program that is used to find and look at information on the Internet

specific – adj. having a particular function or effect

opt – v.  to choose to do or be involved in something

filter – v. to remove (something unwanted) by using a filter

spam – n. e-mail that is not wanted or e-mail that is sent to large numbers of people and that consists mostly of advertising