Question

英語頑張るちゃん

このマーカーの箇所にsvocと品詞を振るとどうなりますか？
a line以外にsvocを振るとどうなるのかが特に分かりません

e
10
Even in tropical regions, the climate and vegetation of mountains differ
considerably from what would be considered normal for the area. Kenya's
Mount Kenya, only about ten miles from the Equator, has fifteen glaciers. The
windward side of a mountain usually has a much lower temperature and a much
heavier rainfall than the leeward side. The leeward side is often known as a "rain
way the
shadow," and is a desert. Most mountains have what is called a timber line, a line
above which no trees grow. Immediately below that line, even in the Torrid Zone
where one would expect palm trees and tropical vegetation, the vegetation and
trees are more the deciduous types of the Temperate.
stupa

Answer 1

シャー

ⓈMost mountains Ⓥhave Ⓞwhat is called a timber line, a line above which no trees grow.
what is called ★　→「いわゆる★」「★と呼ばれているもの」
a lineは，a timber lineの説明ですね。above whichは【前置詞＋関係代名詞】です。
ほとんどの山は，いわゆるa timber lineというものがあり，このa timber lineというのは木がそれ以上育たないlineのことである。的な