1) 597

The fact is that recent economic numbers have been terrifying, not just in the U.S, but around the world, ~~

Q)

not just in the U.S 를 '미국은 아니고' 라고 해석했었는데

해설지에는 '미국뿐만 아니라' 라고 되어 있네요..

어떻게 판단해야 하는 건가요~?

2) 597

It turns out, however, that preventing depressions isn't that easy after all.

Q)

depressions isn't that easy after all.

3) 606

as heat is transferred into the depths by the limited stirring of wave action.

Q)

stirring of wave action.

stirring 은 동명사로 보이는데 구조상 명사가 올자리가 없는데 이렇게 동명사가 독자적으로 자리 잡을 수 있는데?