An open book
毫不掩飾
例句：
Angel's life has been an open book. Her courage and her insights are inspiring.
Angel把自己的經(jīng)歷毫無(wú)保留地講述給大家。她的勇氣和見(jiàn)識(shí)鼓舞了很多人。
Mixed blessing:
混合的祝福 ×
福禍兼俱，有好處也有壞處的事情 √
例句：
I think the project is a mixed blessing. It will create a lot of jobs, but it will also destroy much of the natural habitat on the island.
我覺(jué)得這個(gè)項(xiàng)目有好處，也有壞處。這個(gè)項(xiàng)目確實(shí)創(chuàng)造很多就業(yè)機(jī)會(huì)，但同時(shí)也會(huì)破壞很多動(dòng)物的自然棲息地。
For a song:
為了一首歌 ×
（買(mǎi)到）便宜貨 √
例句：
You picked it up for a song.
你撿到便宜貨了。
Icing on the cake:
在蛋糕上撒糖霜 ×
錦上添花 √
例句：
That was icing on the cake.
這真是錦上添花！
