I can never say no to them.

我从来不会拒绝它们。

It is hard for me to say no to cakes.

我很难拒绝蛋糕。

I have a sweet tooth and it is hard for me to say no to cakes.

我爱吃甜食，很难拒绝蛋糕。

If you are a sugar addict and aren't able to say no to chocolate or cola, you had better download it now!

如果你是糖瘾者，不能拒绝巧克力或可乐，你最好现在就下载它！

If you have to say no to a request, your refusal will sound more polite if you begin with a statement of regret.

如果你必须拒绝请求，先表达遗憾会显得更礼貌。

Everyone should play a part in the Clean Plate Campaign and say no to food waste.

每个人都应该参与到光盘行动中来，对食物浪费说不。

Say no to your boss.

向你的老板说不。

Say no to salty snacks.

拒绝含盐零食。

Right. Say no to fluoro.

对的，对氟碳线说不！

Say NO to name collisions!

对命名冲突说不吧！