In English one can put 'then' before 'weaker' rather than on the end of the sentence. In fact, tacked on at the end it really is weaker. The literal translation is better np... 'then weaker'. On this rare occasion I agree with the contributor except for the fact that it does not sound weird in English and I answered just as I would say it. That is why I was puzzled at Duolingo's rejection! PS I did try it and so I reported it.
This sentence is different I think: it is saying that after performing some action, their security was subsequently weaker, not that it was weaker back in time. For example: 'they fired 10 guards, so their security was then weaker' as opposed to 'I robbed that bank in 1984 - their security was weaker then'.
Yeah my bad, I wasn't clear - I was saying the sentence Stewart suggested seemed more to do with sequence, whereas it seemed to me the 1984 one was correct. [It seems his suggestion changed the sentence somewhat.]
'Back then' clarifies nicely, and I'm impressed to see you're still active here, so thank you :)
Well if you're really sure that the suggested answer is simply incorrect or at least very unnatural, than by all means, comment about it to gain the moderators' attention, and it may be corrected.
By the way, I have a small request: when you ask "what about XYZ", it's sometimes hard to know whether you've actually tried XYZ and it wasn't accepted, or whether you're just asking if it would be another acceptable translation. It would make our job easier if you point out which situation is that :)
Re: Request Sure I did flag it and offered mine as another valid translation. I was marked as wrong.
Since this is a Language site, I must correct a tiny mistake you made :)
"if you're...THAN .."
'Than' is comparative. You want "if ... THEN" -- I write code for computers for a living; I deal with these words daily
Hahaha I just wrote my friend like 30 minutes ago that the more I speak and write in English, the more mistakes I make. And I put "than/then" mistake as the one I make most often :D And here it is, a confirmation. Thanks, I know this, but somehow when writing quickly without giving it much thought I make these small mistakes.