enter upon
开始, 着手, 投身, 获得
例句与用法：
Mr Forster and his guide entered upon this portion of the glacier.
福斯特先生和他的向导进入了冰河地区。
The countries are about to enter upon their first trade agreement as a unit.
这些国家正准备作为一个小组开始讨论它们之间的第一个贸易协定。
开始; 着手干
They have entered upon their new duties.
他们已开始担任新职。