Question

ぽぽ

(2)の和訳をお願いします🙇‍♀️
thisを明確にして和訳する問題です。

(1) When a language is lost, centuries of human thinking about such things as animals and
10
plants may be lost with it. Eighty percent of existing species have not yet been discovered
by science.However, (2)this does not mean that they are unknown to humans. because
the people who live close to them know those species (3) intimately. They often have more
detailed ways of classifying them than science does.

Answer 1

taka

However, (2)this(S1) does not mean(V1) <that(接続詞) they(S2) are(V2) unknown(C2) (to humans)(M)>, because ….
現存する種の80%が科学によってまだ発見されていないということが、＜それらが人間にとって未知のものであるということ＞を意味するものではない。
※this(これ)：必ず前文の内容を指す　they=eight percent of existing species unknown(形容詞)　未知の、知られていない

参考にしてください。