to backtrack a little, the case is a complex one.
一步看，这个案子很复杂。
反
: backtracked, backtracking, backtracks to backtrack a little, the case is a complex one.
一步看，这个案子很复杂。
the unions have had to backtrack on their demands.
联合会不得不撤
他们先前的要求。
he was able to backtrack the buck to a ridge nearby.
他能跟踪那雄鹿到附近山脊。
Marilyn backtracked and went down into the basement.
玛里
去，走到地下室。
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