1·The fence marks the boundary between my property and hers.
那道篱笆是我和她的住宅之间的分界。
—— 《牛津词典》
2·The fence marked the boundary between my property and hers.
那道篱笆曾是我和她的房产之间的地界。
—— 《牛津词典》
3·As game becomes an increasingly important means in teaching, the boundary between study and playing has already been blurred.
随着游戏成为教学中越来越重要的手段，学习和游戏之间的界限早已模糊了。
4·These systems are right on the boundary between stable, orderly behavior and the unpredictable world of chaos, as exemplified by turbulence.
这些系统正好处于稳定、有序行为和不可预测的混沌世界（如乱流）之间的边界上。
5·The plumes apparently originate at great depths, perhaps as deep as the boundary between the core and the mantle, and many have been active for a very long time.
这些地幔柱显然起源于很深的地方，可能深至地核和地幔之间的边界，而且许多都已经活跃了很长时间。
6·The region is extremely unusual geologically, Royden says, because of the very steep slopes at the boundary between the Sichuan Basin to the east and the Tobetan plateau to the west.
罗伊登说，这个地区在地质上极其不寻常，因为在东部的四川盆地和西部的托比坦高原之间的边界上有非常陡峭的斜坡。
7·Encountering real animals reminds us of the boundary between imagination and reality.
遇到真实的动物才会让我们想到想象与现实是有界限的。
8·This change in plankton found in marine deposits is what marks the boundary between the Cretaceous and the Tertiary.
海洋沉积物中浮游生物的这种变化标志着白垩纪和第三纪的分界线。
9·This is the very boundary between the regions.
这就是两地区的边界。
10·PROFESSOR: a boundary between reversible and irreversible?
教授：可逆与，不可逆间的边界？