מכאן (מכאן / לכן)

Separate a conclusion from its cause

• A survey finds that most respondents prefer the shorter route.
• from this, it can be seen…由此可见yóu cǐ kě jiàn，短路线duǎn lù xiàn更受gèng shòuthese这些zhè xiēparticipant in a survey受访者shòu fǎng zhěto welcome欢迎huān yíng。 — from this由此yóu cǐ refers back to the survey result and introduces an inference.

Locate the pattern in real examples

• from this由此yóu cǐ (from this / hence): from this, it can be seen…由此可见yóu cǐ kě jiàn,habit习惯xí guàn(modifier / structural particle)的depower力量lì liàngvery很hěnsee 大夫大dà。; question问题wèn tíis precisely正是zhèng shìfrom this由此yóu cǐand / but而érto come来lái。
• Read the whole clause before choosing a translation. The examples show the pattern in use; the context below determines what the speaker claims.

Follow the speaker

from this由此yóu cǐit can be seen可见kě jiàn，effort努力nǔ lìvery很hěnimportant重要zhòng yào。

• In the opening situation: from this, it can be seen…由此可见yóu cǐ kě jiàn，短路线duǎn lù xiàn更受gèng shòuthese这些zhè xiēparticipant in a survey受访者shòu fǎng zhěto welcome欢迎huān yíng。
• from this由此yóu cǐ refers back to the survey result and introduces an inference.

Check the limit of the explanation

• Match the conclusion's scope to the evidence: these respondents do not represent everybody automatically.
• from this由此yóu cǐto lead to引发yǐn fāto discuss讨论tǎo lùn instead refers to a resulting event, not an inference.

Repair the form before interpreting it

• The form to follow由yóu(completed / change)了lethis此cǐit can be seen可见kě jiàn needs repair here. Write from this, it can be seen…由此可见yóu cǐ kě jiàn instead; keep the word or frame in its demonstrated order.
• Form and meaning are separate checks. After the repair, explain the sentence in its situation rather than treating a familiar translation as a universal rule.

Keep the distinction

Read the full reference: HSK 6 grammar — Sentence patterns.