in turn 依次, 轮流地
e.g
They answered the teacher's questions in turn.
他们依次回答了老师的问题。
in turns 依次,轮流
Please enter the room in turns.
请依次进房间。
区别不是很大
而in turn的中文意思也是“轮流”,“轮班”。但它与by turns的区别在于in turn是按照事先安排好的顺序有次序地一个接一个地“轮流”,而且不强调 在某一期间内的反复性。
in
turn1依次,轮流
the
girls
called
out
their
names
in
turn.
那些女孩儿逐一报出自己的名字.
2反之,反过来
by
turns
轮流,交替地
he
gets
cheerful
and
depressed
by
turns.
他的情绪高一阵低一阵。
we
did
the
work
by
turns.
我们是轮流做这项工作的.
the
shop
assistants
had
to
have
their
days
off
by
turns.
店员要轮流休息。