cause
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→yin1ci3 • yīncǐ
therefore
thus
我 沒 學 過 外語， 因此 不 能 出國 留學。
I never studied a foreign language, therefore I can't study abroad.
工作 太 忙， 因此 沒 來 看 您。
Work was too busy, so I therefore was unable to come see you.