YOU SAID:

those ducks are brightly colored and don't weigh enough to ride this rollercoaster.

INTO JAPANESE

あのアヒルは色が鮮やかで、このジェットコースターに乗れるほどの重さはありません。

BACK INTO ENGLISH

That duck is brightly colored and not heavy enough to ride this roller coaster.

INTO JAPANESE

あのアヒルは色が鮮やかですが、このジェットコースターに乗れるほど重くありません。

BACK INTO ENGLISH

That duck is brightly colored, but it's not heavy enough to ride this roller coaster.

INTO JAPANESE

あのアヒルは鮮やかな色をしていますが、このジェットコースターに乗れるほど重くありません。

BACK INTO ENGLISH

That duck is brightly colored, but it's not heavy enough to ride this roller coaster.