suggestion可數嗎?

suggestion雙語例句：

Do you have any suggestion?

您有什麼建議嗎?

How about this suggestion?

這個建議怎麼樣？

suggestions雙語例句：

Many of your suggestions have been incorporated in the plan.

你的很多建議已納入計劃中。

Are there any suggestions about how best to tackle the problem?

這個問題最好怎樣解決，大家有沒有什麼建議？