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understructure

底座结构; 下层结构

WordNet (r) 3.0 (2006) (WordNet)

understructure
n 1: lowest support of a structure; "it was built on a base of
solid rock"; "he stood at the foot of the tower" [synonym:
{foundation}, {base}, {fundament}, {foot}, {groundwork},
{substructure}, {understructure}]

Moby Thesaurus II by Grady Ward, 1.0 (moby-thesaurus)

41 Moby Thesaurus words for "understructure":
base, basement, basis, bearing wall, bed, bedding, bedrock, bottom,
floor, flooring, fond, footing, foundation, fundament, fundamental,
ground, grounds, groundwork, hardpan, infrastructure, pavement,
principle, radical, riprap, rock bottom, rudiment, seat, sill,
solid ground, solid rock, stereobate, stylobate, substratum,
substruction, substructure, terra firma, underbuilding,
undercarriage, undergirding, underpinning, understruction

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单词	字典	翻译
understructure	查看　understructure　在百度字典中的解释	百度英翻中〔查看〕
understructure	查看　understructure　在Google字典中的解释	Google英翻中〔查看〕
understructure	查看　understructure　在Yahoo字典中的解释	Yahoo英翻中〔查看〕

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Seat Options and Upgrades - United Airlines
Type of Upgrade When you can upgrade How you can upgrade; Upgrade to Economy Plus or a premium cabin* At any point before boarding: Through United com; With the United app; Through the United Customer Contact Center; At a check-in kiosk; With a United representative at the gate; Request a MileagePlus Travel Award: During and after booking
United Airlines Upgrade Order: Complete Guide - NerdWallet
Here are some other ways to increase your chances of getting a United seat upgrade 1 Earn elite status but you may also be charged a cash co-pay Those who are traveling in O, Y or B fare
What you need to know about bidding on flight upgrades for . . .
Many airlines use Plusgrade for their upgrade programs, and travelers can also check for bidding opportunities Bottom line In the end, bidding for upgrades has the potential for great value By offering up a few hundred dollars, you can find yourself in premium economy or business class for much less than the amount your new seat neighbors paid
How to Upgrade Your Seat with Miles: a 2025 Guide - CoverTrip
Upgrade costs are typically displayed during booking but you can also check My Trips later to see yoru options; Most domestic upgrades range from 20,000-30,000 miles, plus a possible co-pay; Pro tip: United’s app shows upgrade availability in real-time – here’s their info page on upgrading Alaska Airlines Currently does not offer miles
How to Upgrade Your Airline Seat Without Breaking the Bank
Pay for more legroom If none of these options work out, you aren’t doomed to a cramped seat near the lavatory at the back of the plane Several major airlines in the U S , and even some low
Can I use miles to upgrade a ticket? - going. com
Here's how--and when--you can upgrade an airline ticket Just remember: the only way to guarantee a seat in a premium cabin is booking it from the outset
MileagePlus Flight Upgrades - United Airlines
If you request an upgrade using a MileagePlus Upgrade Award, and none of your travel segments are upgraded, we will automatically redeposit your miles and refund any co-pay 7-10 days after your trip If you requested upgrades to United Polaris ® business class and did not clear the waitlist, you will get a refund even if you are upgraded to

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