20230828 单词学习

20230828 单词学习

crystal /ˈkrɪstəl/ |CET4 TEM4 1.N-COUNT A crystal is a small piece of a substance that has formed naturally into a regular symmetrical shape. 结晶体 • ...salt crystals. …盐的结晶体。 • ...ice crystals. …冰晶。 2.N-VAR Crystal is a transparent rock that is used to make jewellery and ornaments. 水晶 • She was wearing a strand of crystal beads. 她戴着一串水晶珠子。 3.N-UNCOUNT Crystal is a high quality glass, usually with patterns cut into its surface. 晶质玻璃 • Some of the finest drinking glasses are made from lead crystal. 一些最精致的酒杯是用铅晶质玻璃制成的。 radiocarbon dating N a technique for determining the age of organic materials, such as wood, based on their content of the radioisotope 14C acquired from the atmosphere when they formed part of a living plant. The 14C decays to the nitrogen isotope 14N with a half-life of 5730 years. Measurement of the amount of radioactive carbon remaining in the material thus gives an estimate of its age 放射性碳测定年代法 (Also called carbon-14 dating) quell /kwɛl/ |CET6+ TEM8 1.V-T To quell opposition or violent behaviour means to stop it. 镇压 • Troops eventually quelled the unrest. 部队最终镇压了动乱。 2.V-T If you quell an unpleasant feeling such as fear or anger, you stop yourself or other people from having that feeling. 消除 (恐惧、愤怒等) • The government is trying to quell fears of a looming oil crisis. 该政府正努力消除日益临近的石油危机而带来的恐惧。 tend /tɛnd/ |CET4 TEM4 tendingtendedtends 1.V-T If something tends to happen, it usually happens or it often happens. 倾向于; 往往会 • A problem for manufacturers is that lighter cars tend to be noisy. 制造商遇到的一个问题是重量较轻的汽车往往噪音大。 2.V-I If you tend toward a particular characteristic, you often display that characteristic. 趋向… • Artistic and intellectual people tend toward left-wing views. 艺术人士和知识分子趋向左翼观点。 3.V-T You can say that you tend to think something when you want to give your opinion, but do not want it to seem too forceful or definite. 倾向于 (认为) • I tend to think that our Representatives by and large do a good job. 我倾向于认为我们的众议员们总体上干得不错。 4.V to attend (to) 照顾; 照管 • to tend to someone's needs 5.V to care for 护理 • to tend wounded soldiers 6.V to handle or control 处理; 控制 • to tend a fire tuber n. /ˈtjuːbə(r)/ the short thick round part of an underground stem or root of some plants, such as potatoes, which stores food and from which new plants grow 块茎（某些植物的肉质地下茎） DERIVATIVES 派生词 tu·ber·ous /ˈtjuːbərəs/ /ˈtjuːbərəs/ adj disprove /dɪsˈpruːv/ |TEM8 disprovingdisproveddisprovendisproves V-T To disprove an idea, belief, or theory means to show that it is not true. 证明 (想法、信念或理论) 为误 • The statistics to prove or disprove his hypothesis will take years to collect. 要花数年来收集证实或推翻他的假设的数据。