A clock or a strobe signal is used to synchronise operation of the comparator, the up-downcounter 102 and the digital to analog converter 100 so as to avoid these components racing.
She walks up to the counter, SLAMS a book down and screams at the librarian, - "This is the WORST book I've ever read!"
她走向柜台，砰的一下把书摔到上面然后冲着馆长嚷到，-“这是读过的最烂的书了！”
3
She sank down on one of the little stools behind the counter of the booth and looked up and down the long hall which, until this afternoon, had been a bare and ugly drill room.