The whole system is not (方便的) for use.
It is not easy to (区分,辨别) their meanings.
Some people say the deaths were just (巧合).
The astronauts are required to learn (生存) skills in space.
Young people all over the world (敬佩)Yang Liwei .
(与……相反)many people might assume, evidence shows that sharks seldom attack humans.
The English language (由……组成)the grammar and vocabulary.
The Normans defeated England and (控制,占领) of the country in 1066.
Pronunciation (经历,遭受) huge changes during the Renaissance.
The Chinese language (与……不同)Western languages in that Chinese words are formed by putting together different characters.