?无声进给
... sight-feed tube 可视进料管 silent feed 无声进给 simultaneous feedback error component 同时反馈误差分量 ...
The silent boats allow kayakers to paddle into kelp beds to watch humpback whales feed and seals frolic.
CNN: ASIANOW - TIME Asia | Travel Watch | Open the Door to Cool Summer a Escape
The LulzSec twitter feed, which usually provides a stream of commentary on all matters related to the group, has been silent for the last eight hours.
FORBES: Arrested UK Teen May Be LulzSec Hacker
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