dubious

不可靠的,，可疑的（形容詞）

EXAMPLE: When asked about the missing cookies, the boy told his mother a dubious story about seeing ghosts who live in the house.

在被問到餅干怎么沒有了時,，這位男孩給了媽媽一個不靠譜的說法,，他說這屋里住著幾個鬼。

在破曉時分

Very early in the morning, just as the sun is appearing on the horizon.

EXAMPLE: We started our long journey at the crack of dawn.

我們在破曉時分開始了漫長的旅行。