音标:[sæk] ; 柯林斯词典等级:1 级;
n. 囊, 液囊, (美)战略空军司令部
[医] 囊, 袋
n. a structure resembling a bag in an animal
词型变化:名词复数形式 : sacs
考试类型:[托福]
词性分布:
名词100%

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学英语单词
acpuired
acute cystitides
agricultural weather forecast in time
air depolarized cell
ambulacral spine
angiokeratoma of Mibelli
autoubiquitinates
backup withholding
barbarised
basinal carbonate
bodysnatching
brickwall
bright-white
Bulbophyllum hainanense
carbon planet
cell dissociation buffer
central-governments
charn
chautemps
christmas i. (kiritimati)
climaticity
colloid-calcite
constantness
controversialism
courtesies
cristae obliqua
cross-curriculum
Daliburgh
davi
day beacon
decompaction
desco
despect
diffuses
draining device
encapsulated emulsion
epihyoid
EROGOTOCIN
evolutionary metamorphosis
exhaust smoke detection for diesel vehicle under lug-down
exhaust-air monitor
feed and bleed procedure
Fleurette
fundamentalists
galgani
game fishing
gennifers
Gentiana caelestis
genus Terebella
gingrey
grisel
harbor light
hereticized
hole stitch
hydraulic cold header
hydriodide
inclined knuckle pivot
internal law
ischury
join force with
junction service
katalyze
Kodaira vanishing theorem
krkosek
kurzmen
labrous
lika
Madeira, I.da
Malpasillo, Embalse de
marine shafting
Massinga
maximumwind and shear chart
mindie
motor reducing gear
motty
NBMPR
non-metric theories
off-center condition
over freight
particulate science
PDP-7
penetration of grease
persistent waves
Phleum
plier
pocket buider
program fetch time
pseudo-manifold
reserve for persion fund
schur-cohn stability criterion
senna leaf
sequential collating
solar-eclipse
spin-flip collision
strongylosis
thallous oxide
the needful
transitional epithelium
unnegotiable
yottie
Zharma
Zygomycotina