无防备的

Sometimes, you have the opportunity to attack a foe who is completely defenseless.

有时候你有机会攻击一个完全无防备的敌人。

An unobstructed area of land or water.an open city; open to attack.

未设防的城市；面对攻击无防备的。

Rather, if Benjamin luxuriates in memories of solitude, sleepiness, and sickness, it is because these unguarded states allowed him to communicate most intimately with the objects around him.

更确切地说，如果本雅明沉溺在对孤独、困倦和疾病的回忆中，那是因为这些无所防备的状态，让他能与他周围的事物最亲近地交流。

The Sirens far out in the sea there was an island ,on the rocky edge of which lived three sirens ,the three sisters of magic song.half human and half bird ,the siren sisters sat in a field of flowers ,singing in voices that excited the hearts of men.the attractive songs were so sweet that ships were attracted to the island and struck to pieces on the rocks.no sailor nor ship had ever been known to pass the island of the sirens without being attracted to disaster .

海妖塞壬遥远的海面上有一岛屿，石崖边居住着唱魔歌的海妖塞壬三姐妹。半人半岛的塞壬姐妹们坐在一片花丛里，唱着盎惑人心的歌，甜美的歌声把过往的船只引向该岛，然后撞上礁石船毁人亡。过往的海员和船只都受到迷惑走向毁灭，无一幸免。奥德修斯遵循女神喀耳斯的忠告。为了对付塞壬姐妹，他采取了谨慎的防备措施。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。