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にわたって， に渡って， に亘って
1. throughout, over a period of ..., over a span of ...
tbd
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まっすぐ， 真っ直ぐ， 真っすぐ， 真っ直， 真直ぐ， 真すぐ
1. straight (ahead), direct, upright, erect
2. straightforward, honest, frank
tbd
は
1. indicates sentence topic
2. indicates contrast with another option (stated or unstated)
3. adds emphasis
指示句子的主题；表示与另一选项（无论是否明确提及）形成对比；表示强调
