下午好，我是杨文恺，我找马克听电话。
Good afternoon. This is Wenkai Yang speaking. Can I talk to Mark?
作者还对杨文中的某些观点提出了不同见解。
In the meantime, the author also presents different views concernings…
杨文夫，55岁，由于早年饲养时被一种很毒的毒蛇咬过后放弃饲养这种毒蛇了。
Yang Wenfu, 55, gave up rearing species of venomous vipers after being bitten by one of them earlier in his career.
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