单词：mechanical seal cover
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[00:03.89]辨认人 [00:07.78]Excuse me,are you...? [00:11.42]对不起，您是......吗？（通用） [00:15.05]A:Excuse me,are you Mr Williams from America? B:Yes,I am. [00:18.38]对不起，您一定是美国来的威廉先生吧?是的。 [00:2
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新英语口语900句 Identifying objects 辨别物品(二) 46. What are these? 这些是什么？ 47. These are horses. 这些是马。 48. Where are the sheep? 绵羊在哪里？ 49. There they are. 它们在那里。 50. These are her books. 这些是
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新英语口语900句 Identifying people by occupation 辨别身份 61. Who are you? 你是谁？ 62. I am a pupil. 我是一个小学生。 63. Who is that over there? 那边的那个人是谁？ 64. He is a student. 他是个学生。 65. Is that b
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It is never too late to ask for help. This advice can be useful for anyone in their day-to-day life. It can also be important for someone hoping to get a college education one day. Seeking admission to a college or university can be a complex process
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