ballast
ballast 英 [ˈbæləst] 美 [ˈbæləst]
n. 压舱物，[建] 压载物；道渣，碎石 vt. 给…装压舱物；给…铺道渣
进行时:ballasting 过去式:ballasted 过去分词:ballasted 第三人称单数:ballasts 名词复数:ballasts
- A ballast is any heavy material that helps to make a ship or plane stable, including metaphorical ships like your mood. If you hate school, the thought of a weekend coming might be a ballast for your mood.
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- n. 压舱物，[建] 压载物；道渣，碎石
- vt. 给…装压舱物；给…铺道渣
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1. But without ballast weighing down the bottom, the boat would list to its side and could trap Spotz underwater.
但是，如果在船舱底部没有压舱物，这船会向一边倾斜，这样会把斯伯茨困在水下。
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2. But small satellites, including shoebox-sized “cubesats”, are often used in place of the ballast carried by rockets to improve their weight distribution.
不过小型卫星（包括鞋盒大小的“立方体卫星”），常用来代替火箭携带的压舱物，以改善其重量分布。
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3. You shouldn't need a lot of ballast, which is just gratuitous weight.
莫里森说，“但你不需要很多的压舱物，这白白增加了船的重量。”
- ballast (n.) "heavy material used to steady a ship," 1520s, from Middle English bar "bare" (see bare (adj.); in this case "mere") + last "a load, burden," from Proto-Germanic *hlasta-, from PIE root *klā- "to spread out flat" (see lade). Or borrowed from identical terms in North Sea Germanic and Scandinavian (compare Old Danish barlast, 14c.). "Mere" because not carried for commercial purposes. Dutch balg-last "ballast," literally "belly-load," is a folk-etymology corruption.
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