Its features of rapids in high level block sailing of ten thousand ton fleet in the period of low level.
铜锣峡是三峡库区回水变动段内典型的峡谷河段，其洪水急流滩特性阻碍了万吨船队在水位消落期的顺利航行。
Apple's stated purpose of its revised iPhone developer policy is to block out meta platforms to ensure a high level of quality in the App Store.
苹果声称修订iPhone开发者政策的目的是为了防止出现其他平台软件的翻版，以此来保证软件商店软件的高质量。
High blood pressure or headache: Support your head on a bolster or block, ears level between the arms.
高血压和头痛：用长枕或瑜伽砖支撑头部，耳朵水平的在两臂间。
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