[update]add sent_tokenize

main.py

@@ -137,6 +137,18 @@ It was introduced in this [paper](https://arxiv.org/abs/2010.11125) and first re
             "Chinese",
             "facebook/m2m100_418M",
         ],
+        [
+            "我是一个句子。我是另一个句子。",
+            "Chinese",
+            "English",
+            "facebook/m2m100_418M",
+        ],
+        [
+            "M2M100 is a multilingual encoder-decoder (seq-to-seq) model trained for Many-to-Many multilingual translation. It was introduced in this paper and first released in this repository.",
+            "English",
+            "Chinese",
+            "facebook/m2m100_418M",
+        ]
     ]
 
     model_choices = [