Oligotroph

??? 情景例句

The road toll is higher during holiday periods.
在節(jié)假日期間路橋費比以往要貴。
The lion's skin is never cheap.
獅皮從不賤。
It is eight o'clock.The children go to school by car every day, but today, they are going to school on foot.
現(xiàn)在是8點鐘。孩子們每天都乘小汽車去上學(xué)，而今天，他們正步行上學(xué)。
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?? 更多 O 開頭的單詞

opener 'opn?
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