Sometimes you need to escape a double quote.

有时候是双引号。

哈佛公开课 - 计算机科学课程节选

"Clients expect yield at a shorter time frame, and sometimes double-digit returns, " said Jeffrey Tang, a director at consultants Towers Watson.

WSJ: In Asia, Fickle Millionaires Vex Banks

Doing so allows you to double, sometimes triple, your portions and still lose weight, says Rolls.

CNN: Eat more and weigh less with Volumetrics

When the memory returns, it's like a blow to the stomach that sometimes leaves me bent double.

BBC: Living with the effects of cancer