by land

基本解释

By land area, the biggest is Xinjiang, three times the size of Spain, although with less than half of Spain’s population.
土地面积最大的是新疆，相当于三个西班牙的大小，虽然人口低于西班牙的一半。
Currently half the carbon we release into the atmosphere gets absorbed by land and sea—much of it by plants, which take in carbon dioxide in the process of photosynthesis.
目前，我们释放到大气的二氧化碳中一半被陆地和海上吸收—大部分是由植物通过光合作用吸收。
Madrid’s large airport, so far unaffected by the ash cloud, could handle extra flights with passengers then continuing their journey north by land.
马德里的大机场目前尚未被火山灰云影响，可以处理额外的航班，使旅客们能够向北经由陆地继续他们的旅程。

Lawmakers in Congress wanted to make it possible to send mail all the way across the United States by land.
People who came by land you would be hearing rumblings about down the road from villages that were spread out, but if somebody comes in from the sea on a ship, you may find them there in the morning and you don't know what's what.
陆上来客总伴随着车马隆隆声,沿着途经的村庄一路传来,但是如果有人乘船从海上到来,当他早上来到时你会发现,你对他一无所知
耶鲁公开课 - 古希腊历史简介课程节选
Now, in contrast to the land, God's sanctuary can be purified for moral impurity by means of a special sacrifice.
与土地对比，上帝的圣所倒是可以通过一些特殊的献祭,净化道德上的不洁。
耶鲁公开课 - 旧约导论课程节选

Until now, insecurity has made it hard to provide any aid by land or sea.
ECONOMIST: Somalia