例句：

　　She gave him the bad news without preamble.

　　她開(kāi)門(mén)見(jiàn)山地把壞消息告訴了他。

　　Life just happens, often without preamble.

　　生活恰恰是，往往沒(méi)有序言。

　　Our financial situation had become precarious.

　　我們的財政狀況已經(jīng)不穩定了。

　　That ladder looks very precarious.

　　那梯子看來(lái)?yè)u搖晃晃的。