a dull lecture 枯燥无味的演讲 ; 乏味的演讲
Not to mention others, a night of insomnia, an afternoon of fruitless wait, or the attendance of a dull lecture alone, is far more effective than any faith for you to have a taste of eternity.
不讲别的，只要一个失眠的晚上，或者有约不来的下午，或者一课沉闷的听讲——这许多，比一切宗教信仰更有效力，能使你尝到什么叫做“永生”的滋味。
The lecture was as dull as ditchwater.
那次讲座非常呆板乏味。
The first part of the lecture was vivid but the remaining was dull.
讲座的前半部分很生动，剩下的部分却非常枯燥。
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