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by (A1)

カタカナ: バイ

IPA: /baɪ/

Used to indicate a point in time, no later than.

意味: ある時点、遅くとも〜までに、ということを示すのに使われます。

Please finish the report by Friday. — Please finish the report by Friday.
The package should arrive by tomorrow. — The package should arrive by tomorrow.
We need to leave by noon. — We need to leave by noon.

Japanese translations of By:

by the time (collocation): At the point when. — "By the time we arrived, the show had started."
by hand (collocation): Made or done using hands, not machines. — "The dress was made by hand."
by oneself (collocation): Alone; without help. — "He likes to work by himself."
by and by (idiom): Eventually; in the future. — "We will understand by and by."