My addition can be written as $_ = lc; as well, but explicitly stating the subject of the lc() function makes the one-liner more legible, in my opinion.
我所添加的段也可以写成 $_ = lc; ，但是我认为显式地声明 lc() 函数的对象使一行程序更清晰。
In the sci-tech papers both in English and in Chinese, in stating briefly the purpose and (or) the protocol, "we" is used as the subject in the sentences to express the first personal tone.
在简要陈述研究目的、研究方案时，在汉语、英语科技论文中均可用“我们”作主语来表达第一人称的口气；
Whave pleasure in sending you herewith a Quotation stating the prices of some of our products for your consideration and subject to our final confirmation.
我们高兴地附寄您报价单一份，列明一些品种的价格供贵方考虑，并以我最后确定有效。如其中有商品可销的话，请寄定单。
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