attack: vt.1.攻击 (opp. defend)。2.非难，抨击。3.着手，动手，投入。4.(疾病)侵袭。5.【化学】腐蚀。短语和例子We will not attack unless we are attacked; if we are attacked, we will certainly counter- attack。 人不犯我，我不犯人；人若犯我，我必犯人。 attac
step: vi.(-pp-)1.走；跨步。2.踩，踏上 (on)。3.跳舞，轻快地走，合着步调走。4.跨入，踏进。5.走上。vt.1.跨，踏，踏入；走(…步)。2.(用脚)步测(量) (out)。3.跳舞。4.使成梯阶，使成梯级状。5.【航海】(将桅杆)竖立在桅座上。短语和例子S- this way. 请打这边走。 Will you step inside 请进来。 step on
