词典结果：
it's hard to say
[英][its hɑrd tu: sei][美][?ts hɑ?(r)d tu se]
难说;
以上结果来自金山词霸
例句:
1.
It's hard to say what's fair when it comes to paying top executives.
涉及高管的薪酬，很难说支付多少属于合理范畴。
2.
This could be it but it's hard to say.
也许是的但是不好说.
3.
It's hard to say, given that virtually all humans have been exposed.
这很难说，实际上化学物质已经充斥进了每一个人的生活里。