think twice: look before you leap 三思而行
Think twice before you go talk to the boss - 你去跟老板谈话前要三思而行。
Think twice before you propose to that girl 向那女孩求婚前要三思而行！
to beat the heat 克服高温
He tried to beat the heat by opening a window on the shady side.他为克服高温把不朝阳的一扇窗子打开。
You can jump into a swimming pool to beat the heat！你可以跳进游泳池以应付炎热的天气。