break into a smile meaning in English

破颜

Lord warburton broke into a smile that almost denoted hope .
沃伯顿勋爵不觉转悲为喜，几乎象看到了希望。
He broke into a smile , came up , grabbed the nickel and walked in
他微笑了，甚至放声大笑。他来到我处，拿著钱走进去了。
You said something to me , said doctor manette , breaking into a smile
“你刚才对我说了一件事， ”曼内特医生说，绽出一个微笑。
" well , " said mr . gradgrind , breaking into a smile , after being for the moment at a loss , you are even more dispassionate than i expected
“好！ ”葛擂硬先生踌躇了一会儿，然后笑逐颜开地说， “你比我料想的还要冷静得多。 ”