Fill a two-ounce bottle quarter full of it, and then fill the bottle with fine sand, which serves to preserve a low temperature; then place the bottle in a porous cup, same as used in the battery; fill this also with sand, and close the end with plaster of Paris. Place this in a coating-box, and it will be found to act with great uniformity and be quite permanent.英文原著 · 《American Hand Book of the Daguerreotype》
But notwithstanding the many porous fields thus fertilized, considerable portions of the waters of all these rivers continue to reach their old deathbeds in the desert, indicating that in these salt valleys there still is room for coming farmers. In middle and eastern Nevada, however, every rill that I have seen in a ride of three thousand miles, at all available for irrigation, has been claimed and put to use.英文原著 · 《Steep Trails》
Chapter 1.II. A few moments later the back door of one of the bungalows opened, and a figure in a broad-striped bathing suit flung down the paddock, cleared the stile, rushed through the tussock grass into the hollow, staggered up the sandy hillock, and raced for dear life over the big porous stones, over the cold, wet pebbles, on to the hard sand that gleamed like oil. Splish- Splosh! Splish-Splosh! The water bubbled round his legs as Stanley Burnell waded out exulting. First man in as usual! He'd beaten them all again. And he swooped down to souse his head and neck.英文原著 · 《The Garden Party》
Sometimes there was a little coralline limestone, but no volcanic rocks. The forest had a dense luxuriance and loftiness seldom found on the dry and porous lavas and raised coral reefs of Ternate and Gilolo; and hoping for a corresponding richness in the birds and insects, it was with much satisfaction and with considerable expectation that I began my explorations in the hitherto unknown island of Batchian.英文原著 · 《The Malay Archipelago-2》
"Not particularly--when you know how to do it. In that tank is a porous asbestos packing saturated with acetone, under pressure. Thus I can carry acetylene safely, for it is dissolved, and the possibility of explosion is minimised. This mixing chamber by which I am holding the torch, where the oxygen and acetylene mix, is also designed in such a way as to prevent a flash-back. The best thing about this style of blowpipe is the ease with which it can be transported and the curious uses--like the present--to which it can be put."英文原著 · 《The Silent Bullet》