python
from sumy.parsers.plaintext import PlaintextParser
from sumy.nlp.tokenizers import Tokenizer
from sumy.summarizers.lex_rank import LexRankSummarizer
parser = PlaintextParser.from_string(text, Tokenizer("chinese"))
summarizer = LexRankSummarizer()
summary_length = 3
summary = summarizer(parser.document, summary_length)
for sentence in summary:
print(sentence)
