If things continue this way; if this keeps happening over a long period of time.
长期这样下去。
高阳《清宫外史》上册长此以往，必定搞成明朝末年那个样子，大政受言路的影响，亿不定，政府一件事不能办。”
He kept skipping breakfast; if things continue this way, he will harm his health.
Learn the next connected idiom: 长此以往 (cháng cǐ yǐ wǎng) → 望而却步 (wàng ér què bù)
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