Basic Phrases Come：第57期

---高频词组----

have…to do with
without doubt(=undoubtedly) [color=#1E90FF] in doubt(=in a condition of uncertainty)
be due to
come off duty
go on duty
be on duty
be in duty bound to (do)(=be required by one’s job or esp. by conscience)
be eager for
by ear(=play music from memory without having seen it printed)
have an ear for(=have keen recognition of sounds esp. in music and language)
a word in one’s ear
on earth
with ease( = easily)at (one’s) ease( = without worry or nervousness)
put sb. at his her ease(=free sb. from worry or nervousness)
economize on(=save sth. instead of being wasteful)
have an effect on
be in effect(=be in operation)

请大家写下中文解释^_^

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