1. 沉甸甸的；粗笨的；笨重的
If you describe an object as unwieldy, you mean that it is difficult to move or carry because it is so big or heavy.

2. 臃肿的；庞大的
If you describe a system as unwieldy, you mean that it does not work very well as a result of it being too large or badly organized.

1. lacking grace in movement or posture

e.g. a gawky lad with long ungainly legs
clumsy fingers
what an ungainly creature a giraffe is
heaved his unwieldy figure out of his chair

Synonym: gawkyclumsyclunkyungainly

2. difficult to work or manipulate

e.g. unwieldy rules and regulations

3. difficult to use or handle or manage because of size or weight or shape

e.g. we set about towing the unwieldy structure into the shelter
almost dropped the unwieldy parcel

Synonym: unmanageable