bi(o)=生命;生物life
biology=bio(生命,生物life)+-logy(表学科)
词义:n.生物学(the science of life)
a degree in biology 生物学的学位
biologist=bio+-log(y)+-ist =n.生物学者
biography=bio(生命;生活life)+-graphy(著作)
词义:n.传记(written account about a person's life)
He was the author of biography of Darwin.
他写过一本达尔文传记。