-----------------------------------
払い， はらい
1. payment, bill, account
2. sweeping, clearing away
3. sweeping stroke (e.g. when writing kanji)
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
