That summer vacation is really impressive for me, for I knew a bosom friend.

　　那個暑假想起來，真的很難忘，因為我認識了一個很好的朋友。

　　I want a few bosom friends, unbound by ceremony, and willing to confide in me.

　　我要幾位知心友，不必拘守成法，肯向我盡情吐露他們的苦衷。

　　The two countries, cold and distant in the past, have suddenly become bosom friends.

　　這兩個在過去疏遠冷漠的國家突然變成密友。