(1)机遇购买
指在货物买卖合同中，买方购买的是取得标的物的机会。无论买方是否取得标的物,他都必须支付固定的价款。通常的例子如购买彩票，彩票即为买主提供了获得奖品的机会。

(2)预约包购(=emptio rei speratae)

• longest walk
• longevity pay
• long haul rate
• Long Island Sound
• longissimi temporis praescriptio
• longi temporis praescriptio
• Long Parliament
• long position
• Long Quinto
• long robe
• longshoreman
• Longshoremen's and Harbor Workers' Compensation Act
• long term capital gain
• long term capital loss
• long term debt
• long term financing
• long term lease
• long terms
• long ton
• Longum tempus，et longus usus，qui excedit memoria hominum，sufficit pro jure.
• long vacation
• look and listen
• looking and listening
• looking at law school
• lookout