operator

操作者、運営会社

機械を操作する人や、サービスを運営する人または会社。

やさしい英語で： A person or company that controls a machine or runs a service.

• The crane operator stopped work.
• Our tour operator arranged the hotel.
• Only trained operators may use this equipment.

使い方： operator of something (The operator of the ferry cancelled the crossing.)

よく使う表現： machine operator, tour operator, network operator

電話交換手

電話をつないだり、電話をかける人を手助けしたりする人。

やさしい英語で： A person who connects telephone calls or helps people making calls.

• Ask the operator for help.
• The operator connected me to the hospital.
• A switchboard operator answered all incoming calls.

類義語： telephonist

よく使う表現： telephone operator, switchboard operator, ask the operator

演算子

足し算や割り算など、数に行う操作を示す記号。

やさしい英語で： A sign that tells you to do something with numbers, such as add or divide them.

• The plus sign is an operator.
• Choose the correct operator to complete the calculation.
• These operators tell us how to combine the numbers.

よく使う表現： arithmetic operator, division operator, plus operator

演算子、オペレーター

文法理論で、文中の別の変数と結び付く表現。疑問詞など。

やさしい英語で： In grammar theory, an expression linked to a variable elsewhere in a sentence, often a question word.

• The operator binds a variable.
• This analysis places the operator at the front of the clause.
• A null operator links the gap to the noun.

よく使う表現： wh operator, null operator, relative operator