seal: n.〔sing., pl.〕【动物;动物学】1.海豹。2.海豹毛皮(制品)。3.海豹皮色〔灰黄深褐色〕。4.〔Seals〕〔美国〕海豹突击队〔美国的一支海陆空军突击队〕 the common [harbor] seal (斑纹)海豹。短语和例子the fur seal 腽肭兽,海狗。vi.猎海豹。n.1.(打在火漆,铅等上的)火漆封印;封蜡;封铅;封条。2.捺印;封缄。3.
All test slides are produced on high quality photographic film sealed between two glass plates . this ensures that the high quality images will last for years 所有测试用的幻灯片都由高质量的图片密封于玻璃片中。这保证图片保存若干年而不变质。