We did try to pin him down on his plans for the swimming pool, but he remained evasive.
我们确实想要他对他所拟订的游泳池计划表明态度，但他总是闪烁其词。
2
We are often tempted to quantify core-body rotation numerically - e. g. more than 30 but less than 90 degrees - but few of us are likely to carry a protractor to the pool to pin down the number.