sing along
跟著唱
She sang along when they played it on the radio.
If you know the lyrics, sing along.
sing out
大聲叫喊；大聲回答
"Auntie Susan," Paul sang out.
When you hear your name, sing out!
sing out
大聲唱
Everyone sang out during the chorus.
sing up
唱大聲一點
We can't hear you - sing up.
single * out +
選出；挑出
A lot of people applied for the job but we will single out the best one.
slacken off
(使...) 放慢；減緩；減弱
Work slackens off during the holiday period.
slant toward +
偏愛；偏袒
That travel magazine is totally slanted toward the ultra-rich.
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