| 1 | "This is a rigorous course, " she said. | |
| 2 | Green is intertwined in life and ecology. | |
| 3 | Must have a tight, deep snowshoe foot with well-cushioned pads. | |
| 4 | The tremor may even be so light that only the most delicate machine will record it. | |
| 5 | When correcting, pay close attention to the seventh and last paragraph in the translation. |