“线条流畅的”可以翻译为 “with smooth/flowing lines” 或 “having sleek/fluid lines”。以下是一些具体例句：
1、 This car has smooth lines and a sleek design.（这辆车线条流畅，设计优雅。）
2、 The sculpture is characterized by its flowing lines and dynamic form.（这座雕塑的特点是线条流畅，形态生动。）
3、 Her dress had flowing lines that complemented her figure.（她的连衣裙线条流畅，衬托出她的身材。）