For efficiency reasons, copying any part of the string is avoided until the trimmed version's start and end positions are known.
出于效率原因，在得到修剪区的起始和终止位置之前避免拷贝字符串的任何部分。
2
Meanwhile, modern and classic courtyard landscape, multi-leveled natural planting and well-trimmed planting fully interprets the quality of a high-end modern international living community.