Ballast
[ 'b?l?st ]
輔助 Assistant
n. 壓艙物，壓載物;道渣，碎石;鎮流器;<比喻>沉著;
vt. 給某物裝上壓艙物;給…鋪道渣;使穩定;使沉著;
?? 例句
Arc lamps require a current-limiting ballast.
弧光燈需要一個限流鎮流器。
The ballast may be thrown out to make the balloon go higher.
沙袋可以拋掉以使氣球飛得更高。
bilge ballast pump
船底壓載水泵
He furnished psychological ballast to a desperate President.
他給一位在絕望中掙扎的總統提供了心理鎮定劑。
The rails of the two tracks are supported on wooden ties resting on a ballast.
兩條線路的鋼軌放置在有道碴承托的枕木上。
?? 聯想助記
【記】※ bal-ball球,last-最后的:最后一個球形壓艙物
※ bal-ball球,last-最后的:裝棉花的船太輕所以最后放上鉛球作為壓艙物
? 同義詞
?? 牛津釋義
ballast
n
1 [U] heavy material placed in a ship's hold to keep it steady 壓艙物, 壓載物（船中用以保持平穩的）.
2 [U] sand or other material carried in a balloon, that can be thrown out to make the balloon go higher 氣球所裝載的沙子或其他物質（可將其拋掉以使氣球升得更高）.
3 [U] stones, etc used to make a foundation for a railway, road, etc （鋪筑鐵路、公路等之路基所用的）石塊, 道渣.
4 [C] device used for stabilizing current in an electric circuit 鎮流器.
5 (idm 習語) in ballast (of a ship) carrying only ballast （指船）僅裝有壓艙物的. ballast, v [Tn, Tn.pr]
~ sth (with sth) supply sth with ballast 給某物裝上壓載物.
?? 擴展釋義
*['b?l?st]n. 壓載物, 壓艙物【經】 底貨, 壓艙貨
?? 醫學釋義
①鎮流器 ②平衡器
?? 同為「GRE」詞匯
查看全部GRE詞匯 ›??? 情景例句
Oh, you poor little thing.
哦，可憐的小東西。
How long will it take you to have it made?
你要多少天才能把它做好？
I have no choice.
我別無選擇。