if 引导条件状语从句,主句一般将来时,从句一般现在时
所以这句话应该是:I wonder if scientists are trying to learn about sea floor,they will also face similar problems?
if 引导条件状语从句,主句一般将来时,从句一般现在时
所以这句话应该是:I wonder if scientists are trying to learn about sea floor,they will also face similar problems?