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とても， とっても， 迚も
1. very, awfully, exceedingly
2. (not) at all, by no means, simply (cannot)
非常
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きつい， キツイ
1. tough, hard, severe, demanding, harsh
2. determined, strong-minded, forceful, formidable, fierce
3. strong (e.g. sunlight, alcohol), severe, intense
4. (too) tight, constricting, close
5. extreme, unusually strong
痛苦，困难
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
