Whenever we need to use one of the variables, you pop back into PHP mode and issue an echo statement to write the variable's value directly into the Web page text.

当需要使用某个变量时，就退回php模式，并发出一条echo语句将该变量的值直接写入网页正文中。

youdao

You can go into and out of PHP mode as necessary (to issue echo statements that output variables into the Web page as I've done above, for example).

您可以根据需要(例如，如我在上面所做的那样，发出echo语句以将变量输出到网页中)进入或退出php模式。

youdao

Materials and Methods:40 patients were studied using FLAIR sequence and conventional spin echo(SE). The mode of presentation of the lesions were compared.

材料与方法：对40例脑部受检查者分别使用FLAIR序列及常规自旋回波（SE）序列进行对比分析。

youdao

Unfortunately there's no "tablet mode" like on the Echo to be found here, meaning that apps need to be modified to run in full-screen.

ENGADGET: Prototype dual-screened 2-in-1 Android smartpad from Imerj preview