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1 Markets I: The Ecosystem and Exchange-Traded Markets市场在线 2 Markets II: Rates, FX and Credit市场在线 3 Markets III: Commodities, Energy and Crypto市场在线 4 Quantitative Methods方法在线 5 Derivatives and Volatility衍生品在线 6 Rates, Credit, XVA and Risk利率、信用与风险在线 7 Research Craft: Predictors, Backtests, Measurement, Portfolios研究在线 8 Strategies I: Equities and Futures策略在线 9 Strategies II: Volatility, Relative Value, Macro and the Bank Desks策略在线 10 Microstructure and Execution交易执行在线 11 Market Making and High-Frequency Trading做市在线 12 Machine Learning for Markets机器学习在线 13 Low-Latency Software技术在线 14 Networks, Hardware and Trading Infrastructure技术在线 15 Research, Data and Risk Platforms技术在线 16 The Desk and the Firm公司运营在线 17 The Industry: Firms, Roles and Careers职业发展在线 18 Interviews I: Maths, Probability and Speed职业发展在线 19 Interviews II: Markets, Trading Games and the Final Round职业发展在线 20 Interviews III: Code职业发展在线

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Biology · 术语表

什么是 Microscope？

Definition 29.4 Primary & Middle School Biology · 第 29 章 — A First Look at Cells

A microscope is an instrument whose lenses magnify very small things hundreds of times. Pointed at thin slices of living material, it revealed what no eye had ever seen: the cells. The name itself was coined by an early observer who thought the little compartments in a slice of cork looked like monks’ small rooms — cells.

The instrument that revealed the cells: lenses, light, and a thin slice on a glass slide.

Under the microscope: onion cells and cheek cells. Each compartment — with its small dark spot — is one cell. — onion skin: brick-like cells in neat rows

Under the microscope: onion cells and cheek cells. Each compartment — with its small dark spot — is one cell. — onion skin: brick-like cells in neat rows

示例

Example 29.5 (Two classics under the lens)

Two observations any school microscope can repeat: a shred of the thin skin inside an onion shows neat rows of brick-like cells, wall against wall; a gentle scrape from the inside of a cheek shows scattered, rounder cells — yours. Plant and animal, side by side, both cellular.

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