unexpected meeting meaning in English

不预期遭遇

Never in her life had she seen his manners so little dignified , never had he spoken with such gentleness as on this unexpected meeting
这次邂逅而遇，他的态度竟这般谦恭，谈吐竟这般柔和，她真是从来也没有见过。
He also asked polonius to arrange an unexpected meeting of the two lovers so that they could carefully observe hamlet s behavior
他也要求普罗尼尔斯去为这对情人安排一次意外的相会，以便他们能够仔细观察哈姆雷特的举止表现。