all at once

I carry the luggage.

私は荷物を運びます

I carry the luggage all at once.

私は荷物を一度に運びます

I carry the heavy luggage all at once.

私は重い荷物を一度に運びます

I carry the heavy luggage all at once by car.

私は車で重い荷物を一度に運びます

I carry the heavy luggage all at once by car with my friend.

私は友人と車で重い荷物を一度に運びます