2. tally   verb   

原句: You chat with other viewers, play games designed around the ads and tally more points.

意思:
a. to be the same as or to match another person's account of sth, another set of figures, etc.
b. to calculate the total number, cost, etc. of sth

字源: late Middle English (denoting a notched tally stick): from Anglo-Norman French tallie, from Latin talea ‘twig, cutting’. 

例句:
a. The two accounts tally precisely well.
b. When we tallied up the cost of moving, we decided against it.



3. run amok   idiom   

原句: Sure, it's crass commercialization run amok.

意思: to suddenly become very angry or excited and start behaving violently, especially in a public place 

例句: Some drunken students had run amok in the college car park.



4. commerce   noun [uncountable]   

原句: Games are on the verge of transforming our concepts of work, education and commerce.

意思: trade, especially between countries; the buying and selling of goods and services

字源: mid 16th cent. originally in the sense of social interaction between people: from French, or from Latin commercium ‘trade, trading’, from com- ‘together’ + mercium (from merx, merc- ‘merchandise’). 

例句: She has little experience of the world of commerce.



5. articulate   verb   

原句: Because they offer those clearly articulated rewards for each point players score and new level they achieve.

意思: to express or explain your thoughts or feelings clearly in words

字源: mid 16th cent.: from Latin articulatus, past participle of articulare ‘divide into joints, utter distinctly’, from articulus ‘small connecting part’, diminutive of artus ‘joint’. 

例句: It is the school's duty to articulate its practices to parents.