拿一个物体,对它做点什么,然后再做点别的。
Take an object. Do something to it. Do something else to it.
The most important thing in mathematics is to understand the concepts, not just to memorize formulas.
小规模渔民是沿海社区的支柱,他们的声音必须被倾听。
股市充满了机会,但你必须耐心去寻找它们。