aid

n.帮助；助手；救护 vt.帮助；急救

agreeable, agreeably, agreed, agreement, agricultural, agriculturally, agriculture, agriculturist, agronomist, agronomy, aground, ah, aha, ahead, ahead of, ahead of schedule, ahead of time, ahem, ahoy, AI, aide, aide-de-camp, aide-memoire, AIDS, ail, aileron, ailing, ailment, aim, aim at, aim for, aimless, aimlessly, aimlessness, ain't, air, air base, air brake, Air Chief Marshal, air commodore,