therefore /ˈðeɚˌfoɚ/ adverb Learner's definition of THEREFORE
somewhat formal
: for that reason : because of that因此;所以 -
The cell phone is thin and light and therefore very convenient to carry around.這部手機很輕薄,所以方便攜帶。
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Payment was received two weeks after it was due; therefore, you will be charged a late fee.付款逾期了兩周,所以你應支付滞納金。