Sentence examples for must first check from inspiring English sources
Otherwise, the receiver must first check the freshness of the received CP.
When scientists think they have found a new species, they must first check that it has not already been described.
Proof In the proof, we must first check whether the subgraph is complete or not (which means any two distinct vertices in the vertex set of this subgraph are adjacent).
To reserve a slot for a transmission, a node must first check if no node situated at two hops from it or from its receiver has already reserved the slot.
The old glass, or "cullet," must first be checked for impurities that would weaken the new glass made with it - look for bubbles.
PASSENGERS wanting to fly from, say, Seattle to New York with American Airlines must pay $25 for their first checked bag, $35 for the second and $150 for any more.
Airlines often say they must first authorize these expenses (check your carrier's Web site for policy details), which gives them the discretion to decide if they'll pay only for a toothbrush and a T-shirt, or for a new suit for a meeting you can't miss.
To check in, you must first go to its sister hotel, the chic La Bergère (40 Stationsstraat, 31-43-328-2525; www.la-bergere.com; doubles from 170 euros) a block away, before going to the St . Martenslanes unstaffed lobby.
Would-be gun owners must first pass an FBI background check.
Also, job candidates must first consent to the background check, and they are notified of any adverse information found.
