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key in on
US /ki ɪn ɑn/
・
UK /ki: ɪn ɒn/
B2 中高級
phr.v.
專注於
The detective keyed in on the suspect’s unusual behavior.
影片字幕
ELL Conference 2012：為英語學習者建立詞彙教學！ (ELL Conference 2012: Building Vocabulary for Teaching ELLs)
31:45
and it really does emphasize that vocabulary to a great extent because you had to
key in on
the vocabulary.
針對學術內容的詞彙指導可以
because you had to
key in on
the vocabulary.
因為你必須專注於詞彙。
A2 初級
