in the same time
at the same time有兩個意思：（一）“同時”，相當於at the same moment；（二）“雖然”、“然而”，相當於notwith-standiheless。例：
Plea do not speak at the same time.
請不要同時說話。
We ''t do two things at the same time.
我們不能同時做兩件事。
There is some for what you say; at the same time we adhere to our own opinions.
你的話也有道理，然而我們還是堅持我們自己的看法。
This diary is dirt-cheap; at the same time,I have already got one copy.
這本辭典便宜極了，可是我已經有一本了。
in the same time的意思是“用同樣的時間”，相當於in the same space of time。例：
He went to Hangzhou by train and I went there by car,but both of us reached the "paradi" in the same time.
他坐火車去杭州而我則乘汽車去，但我們用了同樣的時間抵達了“天堂”。
下麵通過兩個句子的比較，我們可以進一步辨別這兩個短語的不同含義：
You started from Hong Kong and I from Macau,and we reached Singapore at the same time.
你從香港出發，我從澳門出發，而我們同時抵達新加坡。
You started from Hong Kong and I from Macau,and we reached Singapore in the same time.
你從香港出發，我從澳門出發，我們用了同樣多的時間抵達新加坡。