at first glance含義：一看就，初看，乍看起來;
1.I recognized him at first glance.
我一眼就把他認出來了。
2.At first glance, my reaction was 「 Wow, Kauffman has such lousy returns with those funds included in the data set?
初初一看，我的反應是「哇，考夫曼數據集裡包含有這些基金，回報率這麼差?」
3.You can always tell a governess at first glance.
你一眼就可以分辨出一個家庭教師。
at first sight含義：乍看之下，一看到…就; 一見鍾情; 乍一看(之下); 乍一看,初看起來;
1.The young couple fell in love at first sight.
這對年輕人一見鍾情。
2.He falls for every pretty girl at first sight.
他對每一位漂亮的姑娘都一見鍾情。
3.At first sight this is proof that capitalism works.
乍一看，這無非是資本主義的一般運作方式。
更多英語詞彙解析可訪問中公英語知識點。