is sometimes warm and sometimes cold中文什么意思

• 天气时而热时而冷it

• sometimes:    adv. 常常，往往，有时。 sometimes ric ...
• warm:    adj. 1.暖和的，温暖的；保暖的。 2.热情的，热心 ...
• cold:    adj. 1.冷，寒，冻；冰凉的。 2.冷静的，冷淡的， ...
• it is sometimes hot and sometimes cold:    天气时热时冷the
• sometimes:    adv. 常常，往往，有时。 sometimes rich, sometimes poor 有时富，有时穷。 ★本词可用在句首、句尾、动词前，助动词及 be, have 后： sometimes he seemed depressed; I go there sometimes; I sometimes go; I am sometimes late.