单词：electron tube power amplifier
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An adult wanderer may travel 5, 000 miles, sometimes to Brazil and back, in order to collect squid for its young. This enormous chick weighs 10 kilos, as much as a full-grown swan. It's the biggest of
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Huge though bergs may be, they are nonetheless usually on the move. But come the winter, sea ice forms around them and locks them solid. As winter progresses, so more and more of the sea freezes, spre
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北京奥运28大项 参与，竞争，分享，进步 Flatwater 皮划艇静水 英文原文 All kayaks and canoes shall carry a vertical plate, made of non-transparent material, marked with black numbers on a white background, indicating the lane. The numbers on the plate
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The male usually leads. If the female is sufficiently impressed, the pair seal their relationship with a vocal duet . King Penguin rookeries are very busy places. Every morning at about 6:00, the adul
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Rotating your plate as it is placed on the table may improve the taste of your food, psychologists claim. People have a subconscious preference for food that points away from them, according to Oxford University experts, to the extent that it can aff
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