A mallard suddenly took wing, rising steeply into the air with an angry squawk.一只绿头鸭突然飞起，愤怒地尖鸣一声直冲天空。Have you worked with Dr. Mallard long, Gerald?你跟着马拉德医生很久了吗, 杰拉德?Should I start taking photos, Doctor Mallard?我该开始拍照了吗, ...
A mallard suddenly took wing, rising steeply into the air with an angry squawk.一只绿头鸭突然飞起，愤怒地尖鸣一声直冲天空。It was Brently Mallard who entered , a little travel - stained, composedly carrying his gripsack and umbrella.走进来的正是布伦特...
In Morse code all letters are four or fewer characters long.在Morse电码中所有字母的长度只有四个或不到四个符号.He covered his tracks, burnt letters and diaries...他掩盖形迹，烧毁了信件与日记。They used chisels to chip the letters into the stone.他们用凿子在石头上刻出字母...