Oil:Expression
【明報專訊】◆Oil the wheels
To facilitate something, to help things run more smoothly.
e.g. Under the pressure of the pandemic, many schools use video conferencing to oil the wheels of distance education.
◆Pour oil on troubled waters
To calm a tense situation.
e.g. He tried to pour oil on troubled waters when they were arguing but in vain.
◆Burn the midnight oil
To work late at night.
e.g. You can't imagine how harmful burning the midnight oil is to your health.
[Smarties' Power English 第280期]