jbini -bin-bi'i- gismu

x1 is between/among set of points/bounds/limits x2 (set)/amidst mass x2 in property x3 (ka).

x2 (a complete set, generally ordered) defines the bounds/limits/range for x1. See also se vasru, nenri, zvati, cpana, snuji, senta, bitmu, jimte, kuspe, jibni, lamji, sruri, vanbi, midju, cmima, setca.

In notes:

bitmu
x1 is a wall/fence separating x2 and x3 (unordered) of/in structure x4.
cmima
x1 is a member/element of set x2; x1 belongs to group x2; x1 is amid/among/amongst group x2.
cpana
x1 is upon/atop/resting on/lying on [the upper surface of] x2 in frame of reference/gravity x3.
jibni
x1 is near/close to/approximates x2 in property/quantity x3 (ka/ni).
jimte
x1 is a limit/extreme/bound/border/[confinement] of x2 in property/domain x3.
kuspe
x1 ranges/extends/spans/persists/reaches across/over interval/gap/area/scope/extent/range x2.
lamji
x1 is adjacent/beside/next to/in contact with x2 in property/sequence x3 in direction x4.
midju
x1 is in/at the middle/center/midpoint/[is a focus] of x2; (adjective:) x1 is central.
nenri
x1 is in/inside/within x2; x1 is on the inside/interior of x2 [totally within the bounds of x2].
senta
x1 is a layer/stratum [shape/form] of x2 [material] within structure/continuum/composite x3.
setca
x1 (agent) inserts/interposes/puts/deposits x2 into interior x3/into among/between members of x3.
snuji
x1 is a sandwich/layering [not restricted to food] of x2 sandwiched between x3.
sruri
x1 encircles/encloses/is surrounding x2 in direction(s)/dimension(s)/plane x3.
vanbi
x1 (ind./mass) is part of an environment/surroundings/context/ambience of x2.
vasru
x1 contains/holds/encloses/includes contents x2 within; x1 is a vessel containing x2.
zvati
x1 (object/event) is at/attending/present at x2 (event/location).
bolbi'i
x1 is the whole region of space which is between inner sphere x2 and outer sphere x3.
plinybinsenta
x1=s1 is a mantle of x2=s2 [material] within planet x3=p1=s3
truci'ebi'i
j1 is intergovernmental / takes place where the decision-making power is shared among j2=t1=c1 (governments).
zvabi'i
x1 is located between/among/within x2 (plural)