cluster
n.串，束，群；v.成群，成串
coagulant
n.凝结剂；凝血剂
coagulate
v.使凝结
coagulation
n.凝固
coalesce
v.联合，合并
coalition
n.结合，联合
coarse
a.粗糙的；低劣的；粗俗的
coarsen
v.使某物变粗糙
coax
v.哄诱，巧言诱哄
cob
n.玉米棒子；雄天鹅
cobbler
n.补鞋匠
cocoon
n.茧
coda
n.乐曲的尾声
coddle
v.溺爱；悉心照料
code
n.密码；法典；v.将某事物编写成密码
