devotetodoingsth還是devotetodosth

devote to doing sth，例如：

1、The more time you and your partner devote to making your relationship strong， the longer it will last.你和伴侶用於經營戀情的時間越長，你們的戀情持續的時間也越長。

2、That will give them more time to devote to upselling add-ons such as extended warranties， paint and fabric protection， and rust-proofing.這會使他們留出更多的時間向消費者推銷延長質保、噴漆、織物保護、防鏽等附加服務。