His gruff exterior concealed one of the kindest hearts.他粗暴的外表下藏着一颗非常善良的心。He could be gruff and monosyllabic.他说话噎人，且话不多。Beneath his gruff exterior, he's really very kind-hearted.他外表冷漠，心地却十分善良。...
He picked up the phone expecting to hear the chairman's gruff voice.他拿起电话，心想会听到主席粗哑的嗓音。a gruff manner粗暴的态度Beneath his gruff exterior, he's really very kind-hearted.他外表冷漠，心地却十分善良。He could be gruff and monosyllab...
这也许是自己多心, 别去想它.Maybe he was just being oversensitive, and he'd better forget about it.我不会对此多心的。I'm not going to get paranoid about it.“ 你可别多心, 她到底可靠不可靠 呢 ? ”" Now don't be touchy, but is she reliable? "...
An atom itself is a complete whole, with its electrons, protons and neutrons and other elements...一个原子本身就是一个完整的整体，包括电子、质子、中子及其他元素。The neutrons and protons form the core of the atom.中子和质子构成了原子核.A substance donates protons...