Translation:Watches are already sold out.
This should work with "watches" and "the watches" and "the watch"; and also with either "are" or "have" or neither; and with "already" at the end.
"Sold out" works as either an adjective or a verb and both past tense and perfect tense work. That adds up to a lot of combinations and permutations.
"The watches are already sold out" Still marked wrong as of 2019-03-21. Reported.
Exactly. Although they like to insist on using the correct English grammar, it is wrong to make an English statement like this without putting "The" before watches.
You cannot "sell out" one watch. You have either sold it or you haven't. You only use "sell out" in relation to a stock of multiple items.
"The wristwatches are already sold out" should also be correct. Reported November 19, 2018
I think jury is out on this one. By saying "have sold out" you are making it active voice with the watches as the subject but the watches haven't really done anything.
By saying "are sold out" you are using "sold out" as an adjectival phrase describing something about the state of the watches. I think both are in common usage (in Australia) but they both sound a bit awkward to me, although your suggestion probably sounds a bit more natural.
I think the safest and most grammatical way of saying it would be "the watches have all been sold" (which of course is the least likely to be said). However it has the benefit that the voice and subject are correct. The watches are the passive object that have been sold by the action of some unstated active subject.
卖完了 = sold or sold out? The watches are already sold should be perfectly fine, no?
The watches have already been sold / The watches have been sold already
The watches were already sold / The watches were sold already
The watches have already sold out / The watches have sold out already
The official translation: "The watches are already sold out", is a bit unnatural. The watches are gone, but the sentence still uses "are" in the present tense. It is natural to say: "They are already here" because it refers to something that is still present.
No one has used 'are' in this kind of sentence for decades. It is always 'Watches have already (been) sold out'