I do not appreciate fully what he means.

我不是完全理解他的意思。

youdao

Many great writer is not appreciate fully while they is alive.

当他们是活着的时，许多伟大的作家没充分被欣赏。

youdao

We believe that it is better to understand the company accounts as a whole in order to appreciate fully the risks it faces and the value it represents, as well as its ability to generate cash.

我们认为最好从整体上认识一个公司的账目，这样就可以全面地识别出这个公司所面临的风险、所显现出的价值，以及它产生现金的能力。

youdao

BARACK OBAMA: "I am pleased that these two men, elected leaders of Afghanistan and Pakistan, fully appreciate the seriousness of the threat that we face and have reaffirmed their commitment to confronting it."

VOA: special.2009.05.09

Advanced photographers will appreciate onboard fully manual controls that customize settings to their comfort and shooting style.

ENGADGET: Olympus SH-50 iHS touts 5-axis video stabilization in a compact, $300 camera (update: hands-on pics)

It is only when gliding along midstream that you can fully appreciate the grandeur around you.

BBC: The changing landscape of the Douro River Valley

His ugliness was subtle: it took you a moment to realize, and fully appreciate, its scope.

NEWYORKER: Sweetheart Sorrow