under pressure 托福

Oil is cracked by heating under pressure.

石油在一定压力下加分解。

Wood blocks may compress a great deal under pressure.

木块压时可缩小很多。

Propylene,the common petroleum gas,is subject to gasification under heating and liquification under pressure.

丙烯是一种气化、压液化的常石油气。

He’s only seventeen, but he has an old head on young shoulders and remains calm under pressure.

他只有十七岁，少年老成，面对压力沉着冷静。