第1个回答 2013-12-02
比：ratio， The ratios of 1 to 5 and 20 to 100 are the same.（1与5之比和20与100之比相同。） 除以：be divided by ， 十除以二等于五。
Ten divided by two is five.
八除以二等于四。
Eight divided by two is four
第2个回答 2013-12-02
over
更正式的除法读作devided by本回答被提问者采纳
第3个回答 2013-12-02
A over B 或者A divided by B
S1 over S2 或者S1 divided by S2
第4个回答 2013-12-02
divide是除的意思
A divided by B
S1 divided by S2
第5个回答 2013-12-02
A devide B，
S1 devide S2