名詞邊界；界限；分界線；使球越過邊界線的擊球（得加分）網(wǎng)絡(luò)邊界創(chuàng)建；范圍；疆界
名詞
1. The river is the boundary between the two countries.
這條河是兩國的分界線。
2. With the advance in science, the boundaries of human knowledge are being pushed further out.
隨著科學(xué)的發(fā)展，人類知識(shí)的范圍在不斷擴(kuò)大。
1. 邊緣：現(xiàn)在我們來研究T0,T1,T2,T3的邊緣(boundary)的性質(zhì):T1的邊緣是由二端點(diǎn)組成, 的邊緣是由三個(gè)頂點(diǎn)及三個(gè)線段組成, T3是由四個(gè)頂點(diǎn)和六個(gè)線段及四個(gè)三角面組成.
2. boundary：bdy; 邊界
1. （土地的）分界線，邊界
The boundary of an area of land is an imaginary line that separates it from other areas.
e.g. ...the Bow Brook which forms the western boundary of the wood...
構(gòu)成了這片樹林西部邊界的鮑溪
e.g. Drug traffickers operate across national boundaries.
販毒分子進(jìn)行跨國販毒活動(dòng)。
2. （學(xué)科或活動(dòng)的）界限，邊界
The boundaries of something such as a subject or activity are the limits that people think that it has.
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e.g. The boundaries between history and storytelling are always being blurred and muddled.
歷史和軼聞的分界向來是模糊而混亂的。
e.g. ...extending the boundaries of press freedom.
擴(kuò)大新聞自由的界限