The structure 由…组成
"To be made up of..."
The structure 由…组成 
is used to express what an object consists of.
The object can be both a concrete noun, e.g. "a team", "a bouquet". And an abstract noun, e.g. "love", "trust".
is used to express what an object consists of.
The object can be both a concrete noun, e.g. "a team", "a bouquet". And an abstract noun, e.g. "love", "trust".Scheme
subject
who? what?
由
object
what is it made of?
组成
Pay attention
In some cases, the particle 的 is placed after 组成.
汉字由部首组成的 Chinese characters are made up of radicals.
足球队由11个足球员组成
is placed after 组成.
汉字由部首组成的 Chinese characters are made up of radicals.
足球队由11个足球员组成
Examples
汉字由部首组成的
Chinese characters are made up of radicals
hànzì yóu bùshǒu zǔchéng de
足球队由11个足球员组成
A football team consists of 11 players
zúqiúduì yóu shíyī ge zúqiúyuán zǔchéng
爱情由互相相信组成
Love involves mutual trust
àiqíng yóu hùxiāng xiāngxìn zǔchéng