... a rare treat 少有的款待 be of rare occurrence很少发生 duty of rare 保管责任 ...
双语例句
1
France Info radio quoted an airport authority source as saying that its absence from the radar could be a question of a transmitter failure, but that this would be a very rareoccurrence.
At the highest level of profitability, perhaps a very rareoccurrence, we might even be able to place our exit stop at the previous day's low to protect the great profit we have accumulated.