例句與造句

1. some regions such as america and europe are in the mature phase, while others, including china, are still lingering in the introduction phase before rapid growth
   本文的主要結(jié)論是：*世界民用直升機(jī)市場(chǎng)的發(fā)展?fàn)顩r很不均衡，歐美一些發(fā)達(dá)國(guó)家已進(jìn)入市場(chǎng)成熟階段，而包括我國(guó)在內(nèi)的一些國(guó)家尚處于快速增長(zhǎng)期之前的起步階段。
2. It's difficult to find introduction phase in a sentence. 用introduction phase造句挺難的