unbelievable 各种形式？
①形容词形式→反义词believable
adj. 可信的
But for the well-made play, even the exposition had to be logical, believable.但对于制作精良的剧本来说，即使是叙述部分也必须合乎逻辑、可信。
②名词形式belief
n. 相信，信心；看法，信念，观点；信仰，信条
The Greeks accepted belief in the immortality of the soul.
希腊人接受灵魂不灭的信念。
③动词形式believe
v. 相信；认为，猜想；信教
Sometimes you cannot believe what you see. You h***e to believe what you feel.
