behalf n. on behalf of sb/on sbs behalf; US in behalf of sb/in sbs behalf as the representative of or spokesman for sb; in the interest of sb 　　benefit n. profit; gain; future good 　　bias n. opinion or feeling that strongly favours one side in an argument or one item in a group orseries; predisposition; prejudice 　　bond n. written agreement or promise that has legal force; covenant 　　brief adj. lasting only a short time; short 　　bulk n. size, quantity or volume, esp when great 　　capable adj. having ability; able; competent 　　capacity n. ability to hold or contain sth 　　category n. class or group of things in a complete system of grouping 　　cease v. come or bring to an end; stop 　　challenge n. ~ invitation or call to take part in a game, contest, fight etc to prove who is better, stronger, more able, etc 　　channel n. sunken bed of a river, stream or canal 　　chapter n. division of a book 　　chart n. detailed map used to help navigation at sea, showing coasts, rocks, the depth of the sea, etc 　　chemical adj. of or relating to chemistry 　　circumstance n. condition or fact connected with an event or action 　　cite quote; commend 　　civil adj. of or relating to the citizens of a country 　　clarify v. become clear or easier to understand 　　classic adj. having a high quality that is recognized and unquestioned; of lasting value and importance 　　clause n. group of words that includes a subject1 and a verb, forming a sentence or part of a sentence 　　code n. words, letters, symbols, etc that represent others, used for secret messages or for presenting or recording information briefly 　　coherent adj. connected logically or consistent; easy to understand; clear 　　coincide v. ~ occur at the same time or occupy the same period of time as sth else 　　collapse v. fall down or in suddenly

　　behalf n. on behalf of sb/on sbs behalf; US in behalf of sb/in sbs behalf as the representative of or spokesman for sb; in the interest of sb 　　benefit n. profit; gain; future good 　　bias n. opinion or feeling that strongly favours one side in an argument or one item in a group orseries; predisposition; prejudice 　　bond n. written agreement or promise that has legal force; covenant 　　brief adj. lasting only a short time; short 　　bulk n. size, quantity or volume, esp when great 　　capable adj. having ability; able; competent 　　capacity n. ability to hold or contain sth 　　category n. class or group of things in a complete system of grouping 　　cease v. come or bring to an end; stop 　　challenge n. ~ invitation or call to take part in a game, contest, fight etc to prove who is better, stronger, more able, etc 　　channel n. sunken bed of a river, stream or canal 　　chapter n. division of a book 　　chart n. detailed map used to help navigation at sea, showing coasts, rocks, the depth of the sea, etc 　　chemical adj. of or relating to chemistry 　　circumstance n. condition or fact connected with an event or action 　　cite quote; commend 　　civil adj. of or relating to the citizens of a country 　　clarify v. become clear or easier to understand 　　classic adj. having a high quality that is recognized and unquestioned; of lasting value and importance 　　clause n. group of words that includes a subject1 and a verb, forming a sentence or part of a sentence 　　code n. words, letters, symbols, etc that represent others, used for secret messages or for presenting or recording information briefly 　　coherent adj. connected logically or consistent; easy to understand; clear 　　coincide v. ~ occur at the same time or occupy the same period of time as sth else 　　collapse v. fall down or in suddenly