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n. 模拟器；假装者，模拟者
v. 累积（cumulate的过去式）
贮液筒
The Bulova stopwatch has a two-inch main dial with second hand registering up to 30 seconds in increments of 0.1 second, with a subsidiary dial cumulator registering up to 30 minutes.
FORBES: Apollo 15 Bulova Moon Watch Up for Auction at Bonhams
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