Schools should not ask students to do homework on the phones and they should set up teacher hot lines and public phones for communication between parents and students.

学校不应要求学生在手机上做作业，他们应该设立教师热线和公共电话以供家长和学生沟通。

youdao

Most hot lines are usually free, too.

通常大多数热线也是免费的。

youdao

Clearly, hot lines are no cure for the problem of drug abuse.

显然，连专线电话也无法解决“滥用麻醉品”的问题。

youdao

These lines follow underwater mountains, where hot liquid rock flows up from deep inside the planet.

VOA: special.2010.01.12

"Companies have shied away from universal hot lines because they're a vehicle for anyone who wants to screw them, " he says.

FORBES: Magazine Article

Facebook investigates each report and may send a suicidal person an e-mail offering phone numbers for suicide hot lines, he said.

CNN: Mark Milian,

The government set up hot lines for reporting them, and early in the campaign handed out "Rat on a Rat" bumper stickers.

WSJ: In Alberta, Citizens Smell a Rat After Long-Banned Rodents Appear