proof

1.The proof of the pudding is in the eating.只有通過體驗(yàn)才能判斷事物的好壞

2.be living proof of sth./that （用行動(dòng)或品格）證明...屬實(shí)

tell

1.as far as i can tell據(jù)我判斷

2.it's hard to tell這很難說

3.tell its own tale/story不言自喻，不釋自明

4.tell tales (about sth./on sb.)

5.there's no telling難以預(yù)料，無法知道

6.you can never tell誰也拿不準(zhǔn)，很難說