But nobody guessed what lay behind his calm appearance.

伯德伍德先生没有她说话，回到了农场的家里。是一个感情强烈的人，的情感通常都深深地埋在心底。严肃，不们开玩笑，所以人们都觉得很冷漠。可爱谁或是恨谁时，却是全心全意的。如果知道这个黝黑、沉静的人的感情是多么强烈的话，她一定会为自己的不慎重而自责不已。不过，谁也不知道在沉静的外表后面藏着什么。

For the first time, it occurred to him that Agnes might be in physical danger as a result of some incautious experiment on the part of Dr. Whitting.

首次想到，阿格尼可能因惠廷医生某些不慎重的实验而陷入身体上的危险。

On the other hand, she might wish to keep the affair quiet, and it might be highly indiscreet on my part to give any sign that this strange news had reached me.

可是另一方面，她也可能想把这件事瞒着我，如果我叫她猜出来自己已经听到这件奇怪的消息，那就太不慎重了。