① hide為普通詞,有意或無意地藏都可以。
The snow hid the footprints of the criminal. 大雪蓋住了罪犯的腳印。
② conceal為正式詞,往往是故意的。
The criminal tried to conceal the bloody knife in the snow. 罪犯企圖把血淋淋的刀在雪中藏匿起來。
You can not conceal your plan with George from me because I know the inside out from the beginning. 你和喬治的計劃瞞不住我,從一開始我就透徹了解了。