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重点讲解：
1. pick out 辨认出；分辨出；
例句：The detective-constable picked out the words with difficulty.
探警费力地辨认出这些文字。
2. lots of 许多；很多；大量；
例句：We took lots of measurements.
我们得到了许多测量结果。
3. contribute to 促成；促使；是导致…的原因之一；
例句：There is no doubt that these measures will contribute to the solution of the problem.
毫无疑问这些措施将会有助于解决这个问题。
4. come back 回来，回去；
例句：She's going to come back every so often.
她会偶尔回来的。
vt. 推断，推论，猜测，暗示
vi. 作出推
